G w heil (58 resultados)

Heil, R.: A. Zur Geologie der Messel-Formation. Heil, R.: B. Die bergbauliche und weitere Nutzung der Messel-Formation. Graner, D.: C. Die Bergung der Fossilien in der Grube Messel. Lippmann, G.: D. Präparation von Fossilien aus der Grube Messel. Heunisch, C.: E. Pflanzenfossilien der Messel-Formation. Koenigswald, W. v.: F. Die Fauna der Messel-Formation. Lippmann, G. & Koenigswald, W. v.: G. Wissenschaftliche Literatur zur Messel-Formation. Darmstadt. Hessisches Landesmuseum Darmstadt. 159 pp., num. b/w figs, hardback gr. 8 [20.3 x 20.7 cm] [with a signature by Wighart von Koenigswald].…

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88 S., zahlr. Abb., Sprache: Deutsch Gewicht in Gramm: 500.

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Condición: Used. pp. ix + 222, Maps.

Paperback. Condición: Brand New. reprint edition. 222 pages. 9.75x6.50x0.50 inches. In Stock.

Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - The main activities of the economically active population around The Iztaccíhuatl and Popocatépetl volcanoes region lie in the primary sector (65- 90%). Of the people working in this sector, those dependent on agricultural or pastoral activities generally have an income significantly lower than the minimum wage in Mexico. Of the activities in the area, these agricultural, pastoral, and forestry activities probably have the most direct effect on the ecology of the volcanoes and its immediate surroundings. Traditional farmers, producing crops such as beans, pumpkins and cucumbers, generally work on small fields using traditional methods and animal traction. Modern farming, geared towards intensive production develops on larger sites making use of modern machinery, fertilizers, and pesticides. As the area under agriculture continues to increase every year, the attendant opening of large forested areas, soil modification, and ensuing erosion make it almost impossible for forest recovery. Extensive forestry in the region mainly concerns cutting and collecting wood, cutting Pinus-branches for torches or for utensils for open-fire cooking, collection of mushrooms, and hunting. Although these (often clandestine) activities seem to be small-scale, their adverse effects on the forest have been substantial. Weekend visitors from Mexico City heavily dominate recreation, with tourism concentrated near the roads leading to and inside the park. Lacking organization and facilities, most recreational activities have had significant environmental impact on the area In many countries, the decline of nature has occurred because of changes in land use.…

Condición: Used. pp. ix + 222 Illus., Maps.

Condición: Used. pp. ix + 222.

hardcover. Condición: Very Good. Most items will be dispatched the same or the next working day. A copy that has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

Taschenbuch. Condición: Neu. Ecology and Man in Mexico's Central Volcanoes Area | G. W. Heil (u. a.) | Taschenbuch | ix | Englisch | 2013 | Springer | EAN 9789401037563 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu. …

Condición: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.…

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Hardcover-Großformat. Condición: Gut. 223 Seiten Der Erhaltungszustand des hier angebotenen Werks ist trotz seiner Bibliotheksnutzung sehr sauber. Es befindet sich neben dem Rückenschild lediglich ein Bibliotheksstempel im Buch; ordnungsgemäß entwidmet. In ENGLISCHER Sprache. Sprache: Englisch Gewicht in Gramm: 755.…

159 S., zahlr. Abb., Sprache: Deutsch Gewicht in Gramm: 500.

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Condición: New. In English.

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