John g torrey (40 resultados)

Soft cover. Condición: Very Good. 1st Edition. Copyright Date: 1967 Octavo, Text Figures, PP.184, Summary Of How Flowering Plants Develop From Single Cells To Adults Very Good, John Elsley's Name And Bookplate Current Concepts In Biology Series First Edition. Text Figures (ilustrador).

cd_rom. Condición: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Paperback. Condición: Acceptable. The book is in fair condition with noticeable wear. The dust jacket shows signs of age, including minor edge tears and creases. The binding remains intact, and there are no inscriptions or library markings. The pages are clean, although the cover exhibits some scuffing and handling wear. Worn with minor edge tears and creases.…

Soft cover. Condición: Very Good. Current Concepts In Biology Series Copyright Date: 1967 Octavo, Text Figures, PP.184, Summary Of How Flowering Plants Develop From Single Cells To Adults. Text Figures (ilustrador).

Soft cover. Condición: Very Good. 1st Edition. Copyright Date: 1967 Octavo, , PP.184, Summary Of How Flowering Plants Develop From Single Cells To Adults Very Good, Owners Name At Cover Current Concepts In Biology Series First Edition. Text Figures (ilustrador).

Soft cover. Condición: Near Fine. 1st Edition. Cover has a small nick, otherwise volume is bright and fresh. [4], 103 p. [M1:2:2].

Trade Paperback. First Edition. 103 pages. Torrey was the director of the Maria Moors Cabot Foundation from 1966 - 1975. First edition (first printing). Covers lightly soiled else a fine copy in wrappers (paperback). From the Harvard office library of the paleontologist and leading advocate for evolution, Stephen Jay Gould.…

Condición: Gut. 1st print. 24 cm/9,4". 184 S. mit zahlr. Abb. Illustrierter Originalkarton (Softcover). Einband gedunkelt u. braunfleckig. Current Concepts in Biology Series.

Paperback. Condición: Good. 184 pages. cover worn. Text tanned.

Paperback. Condición: Used: Acceptable. Paperback in good condition, school stamp to front cover.

Condición: Gut. Gebraucht - Gut * good, clean condition, no markings in text *.

deficiency and added auxin (S. A. Canad. J. of Bot. Vol. 58, Nr. 8) 1980. S. 856 - 866. m. zahlr. Abb. geklammert -2) -Sonderabdruck-.

paperback. Condición: New. In shrink wrap. Looks like an interesting title.

Condición: Good. 1989th Edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. …

Condición: New.

Condición: New.

Condición: New.

Condición: As New. Unread book in perfect condition.

Condición: As New. Unread book in perfect condition.

Condición: New.

Buch. Condición: Neu. Applications of Continuous and Steady-State Methods to Root Biology | Lawrence J. Winship (u. a.) | Buch | Developments in Plant and Soil Sciences | Einband - fest (Hardcover) | Englisch | 1989 | Springer Netherlands | EAN 9780792300243 | Verantwortliche Person für die EU: Springer Nature Customer Service Center GmbH, Europaplatz 3, 69115 Heidelberg, productsafety[at]springernature[dot]com | Anbieter: preigu. …

Condición: New. Editor(s): Torrey, J.G.; Winship, L.J. Series: Developments in Plant and Soil Sciences. Num Pages: 248 pages, biography. BIC Classification: PSB; PSTD. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly. Dimension: 234 x 156 x 15. Weight in Grams: 553. . 1989. Hardback. . . . . …

Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book provides an excellent illustration of the interrelationship between progress in scientific methodology and conceptual advances, and its publica tion should contribute to further advances. It is well known that major advances in understanding often follow the development of new methods. The development of the acetylene reduction assay for nitrogenase activity provides a good example of this interrelationship between theory and methods. Theoretical knowledge led to a search for substrates for nitro genase that could be assayed for more easily than ammonium, the normal product of the enzyme. The discovery of the reduction of acetylene to ethylene by nitrogenase provided the ideal answer to the problem by provid ing a rapid, specific, nondestructive, and inexpensive assay for nitrogenase activity. This assay is now used by almost every laboratory doing research on nitrogen fixation. However, further use and development of the acetylene reduction assay has shown that it can underestimate nitrogenase activity and can even give incorrect relative values under some circumstances. The major problem is that exposure of legume nodules to acetylene can cause a large increase in the resistance to oxygen diffusion into the nodule. This reduced supply of oxygen decreases the rate of nitrogenase activity within a few minutes.…

Buch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book provides an excellent illustration of the interrelationship between progress in scientific methodology and conceptual advances, and its publica tion should contribute to further advances. It is well known that major advances in understanding often follow the development of new methods. The development of the acetylene reduction assay for nitrogenase activity provides a good example of this interrelationship between theory and methods. Theoretical knowledge led to a search for substrates for nitro genase that could be assayed for more easily than ammonium, the normal product of the enzyme. The discovery of the reduction of acetylene to ethylene by nitrogenase provided the ideal answer to the problem by provid ing a rapid, specific, nondestructive, and inexpensive assay for nitrogenase activity. This assay is now used by almost every laboratory doing research on nitrogen fixation. However, further use and development of the acetylene reduction assay has shown that it can underestimate nitrogenase activity and can even give incorrect relative values under some circumstances. The major problem is that exposure of legume nodules to acetylene can cause a large increase in the resistance to oxygen diffusion into the nodule. This reduced supply of oxygen decreases the rate of nitrogenase activity within a few minutes.…

Condición: New. pp. 268 Index.

Condición: New. pp. 268 Index.

Paperback. Condición: Brand New. 268 pages. 9.25x6.10x0.61 inches. In Stock.

Condición: New. Editor(s): Torrey, J.G.; Winship, L.J. Series: Developments in Plant and Soil Sciences. Num Pages: 248 pages, biography. BIC Classification: PSB; PSTD. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly. Dimension: 234 x 156 x 15. Weight in Grams: 553. . 1989. Hardback. . . . . Books ship from the US and Ireland. …

Condición: Fair. Washinton, D.C.: United States Government Printing Office, 1857. Early edition. Volume 7. 4to Hardcover. 23+42+204+28+116+37pp. B/W platese and tables. Reading Copy. Lacking backstrip. Heavy edgewear. Hinges cracked. Pages age toned. With typical period foxing throughout. (US history, geography, natural history, exploration, travel) Inquire if you need further information. NOT AVAILABLE FOR SHIPMENT OUTSIDE OF THE UNITED STATES.…

Hardcover. Condición: Good. First edition. John Wesley Powell's copy of Volume II of these 1853-54 reports, with his stamp faintly in purple ink on the title page. A good only copy with dampstaining throughout, but collectible in light of its owner, who famously would go on to survey and provide his own report on the Grand Canyon. These 1853-54 reports were issued somewhat haphazardly in 12 volumes, apparently as they were received rather than by region. Volume II contains the following: 1) "Report, by Lieutenant E.G. Beckwith, Third Artillery, upon the Route near the Thirty-Eighth and Thirty-Ninth Parallels Explored by Captain J.W. Gunnison, Corps of Topographical Engineers" (Gunnison was killed on the journey); 2) "Report of Lieutenant E.G. Beckwith . . . upon the Route near the Forty-First Parallel"; 3) Report of a Reconnaissance from Puget Sound, via South Pass, to the Mississippi River, by F.W. Lander, Civil Engineer"; 4) "Report of Brevet Captain John Pope, Corps Topographical Engineers, upon the Portion of the Route near the Thirty-Second Parallel, Lying between the Red River [the Colorado] and the Rio Grande"; 5) "Report of Lieutenant John G. Park, Corps Topographical Engineers, upon the Portion of the Route near the Thirty-Second Parallel, Lying between the Rio Grande and Pimas Village, on the Gila"; and 6) "Extract from Report of a Military Reconnaissance Made by Lieutenant Colonel W.H. Emory, U.S. Army, of the Portion of the Route near the Thirty-Second Parallel, Lying between the Mouths of the San Pedro and Gila Rivers." Among several of the later reports are botanical sections by Asa Gray and John Torrey. These are replete with nice line-drawing botanical plates. In the first Beckwith report, J.M. Stanley provides a series of beautiful vista illustrations in color of the Gunnison route. Near the rear are a fold out map and a fold out geological section depicting the stretch between the Colorado River ("Red River) and the Rio Grande. A contemporary binding of red cloth and quarter/corner leather, with five raised bands and gilt lettering on spine. Red marbled endpapers. Again, good only with dampstaining to all corners of the pages, top and bottom (see photos). The pages have some light waviness to them, but turn fine and are readable, the text itself mostly free of staining. Mottling on front board, wrinkle on rear. Rubbing to board edges and nicks to spine corners as one might expect for a heavy book of this age. Despite its condition, still a special copy--Powell's. The inclusion of the Colorado River in the fourth report in the volume would have ultimately been of special interest to him, and one imagines the example of these reports would have influenced his own.…