H a spoehr (78 resultados)

Soft cover. Condición: VG. 11pp extract, salvaged from a damaged copy of the Annual Report Of The Board of Regents Of The Smithsonian Institution For The Year Ending June 30, 1922. The meaning of photosynthesis, waste of solar energy, energy resources available, possibilities of photosynthesis, cellulose as a source of fuel. Housed in protective mylar report cover. …

Hardcover. Condición: Very good+ condition. First Edition. xvi, 118 pages of text. Hardcover binding with minimal shelfwear. Previous owner's bookplate on front paste-down endpaper.

hardcover. Condición: Very Good. Macmillan, NY 1929, 1st., small 8vo., cloth, 118pp., VG with bits of dj present. $.

Condición: New.

Condición: New.

Condición: New.

Condición: New. pp. 398.

Condición: New.

Paperback. Condición: Very Good. First Edition. Two lectures in the Elihu Root series for the Carnegie Institution of Washington, on the influence of science & research on current thought. Angell was President of Yale and Spoehr the Chairman of the Division of Biology at Carnegie. Paperback, stiff tan covers, black titling. Light wear, corners bumped, pencilled name on front cover. Text clean; v, blank, 54 pages. Size: 6¼" by 9¼".…

Condición: New.

Condición: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,400grams, ISBN.

Condición: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Re-bound by library. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,1150grams, ISBN.…

Condición: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,1300grams, ISBN.…

Hardcover. Condición: Good. Estado de la sobrecubierta: N/A. 1st Edition. 394pp. Black cloth-covered boards, gilt titles on spine. 8vo. . Lightly rubbed, covers stained and rubbed. Top text block edge dusty. Bookseller's label on front pastedown. Endpapers starting to fox and tan. Internally neat, clean, bright and tight. Discusses the salient features of the subject. …

Condición: New.

Cloth w/DJ. Condición: VG/G. New York, NY: Macmillan Company. VG/G. 1929. . Cloth w/DJ. 8vo., xiii, 118pp., Ownership; dj faded with chipping . Not Illustrated (ilustrador).

Condición: Good. *Price HAS BEEN REDUCED by 10% until Monday, Nov. 2 (weekend sale item)* 55 pp., stiff board covers, ex library, good, - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.…

Softcover. Off white wraps. 147 pp. BW figures, one color plate. Good+ (ex-library with expected marks plus perforation stamp on title page, frontispiece, intro and pg 1. binding tight. some toning to covers. ).

Softcover. off-white wraps. 67 pp. BW illustrations. good+ (ex-library with expected marks--with narrow volume, spine markings are on front. cover a little wavy, probably from bookplate adhesive. perforation stamp on title page. binding tight).

Condición: fair to good. 54, wraps, small stains to margins of a few pages, some wear to edges of covers, covers and spine somewhat soiled.

(S. A. Plant World Vol. 21, No. 10) S. 245 - 249) Sonderabdruck Offprint. 1918. Guter Zustand/Good condition. Broschur/Softcover. Sprache: englisch/english.

action of plants (S. A. Sci. N. S. Vol. XLV, No. 1168) S. 484 - 488) Sonderabdruck Offprint. 1917. Guter Zustand/Good condition. Broschur/Softcover. Sprache: englisch/english.

drying of Biocolloids and plant tissues (S. A. Plant World Vol. 22, No. 5) S. 129 - 137) Sonderabdruck Offprint. 1919. Guter Zustand/Good condition. Broschur/Softcover. Sprache: englisch/english.

aspects (S. A. Sci. N. S. Vol. XLV, No. 1172) S. 1 - 5) Sonderabdruck Offprint. 1917. Guter Zustand/Good condition. Broschur/Softcover. Sprache: englisch/english.

Condición: New.

(S. A. Yearbook Nr. 27) S. 167 - 202. m. zahlr. Abb.) Sonderabdruck Offprint. 1928. Guter Zustand/Good condition. Broschur/Softcover. Sprache: - - -/.

Condición: VG. Philadelphia 1951 first edition. vol 95 no 1. 4to wraps. Complete issue paginated pp. 1-91. Includes: Population Trends in Densely Populated Areas; Chlorella as a Source of Food ; Production of Nutritive Substances from Inedible Carbohydrates; Aquatic Resources for World Food Needs, etc. VG no owner marks. …

Taschenbuch. Condición: Neu. Neuware - 'Photosynthesis' by H. A. Spoehr is a comprehensive scientific examination of one of nature's most vital processes. This authoritative work delves into the intricate mechanisms by which green plants transform solar energy into chemical energy, a foundation for life on Earth. Spoehr meticulously explores the chemical and physical aspects of the photosynthetic process, detailing the role of chlorophyll, the absorption of carbon dioxide, and the subsequent synthesis of carbohydrates.Written during a transformative era in biochemical research, the book provides a rigorous overview of the experimental methods and theoretical developments of the early 20th century. It addresses the complexities of energy transformation in plants and the factors influencing the rate of photosynthesis, such as light intensity and temperature. This work serves as an essential reference for students and researchers in botany, biochemistry, and plant physiology, offering a clear and structured synthesis of the scientific knowledge of its time.Through its logical presentation and empirical focus, 'Photosynthesis' remains a significant contribution to the literature of plant science, documenting the foundational discoveries that shaped our modern understanding of plant metabolism and ecological energy cycles.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you may see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.…

PF. Condición: New. This item is printed on demand. Brand new book, sourced directly from publisher. Dispatch time is 6-7 days from our warehouse. Book will be sent in robust, secure packaging to ensure it reaches you securely.

Condición: New. KlappentextThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly .