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by Walter, Heinrich
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Vegetation of the earth and ecological systems of the geo-biosphere
Heinrich Walter
The vertebrates of Arizona
Charles H. Lowe
The Ecozones of the World
Jürgen Schultz
South America
Carl Proujan
Life zone ecology
L. R. Holdridge
An eco-climatic classification of intertropical Africa
H. N. Le Houérou
Life zones and crop zones of New Mexico
Vernon Bailey
Biological survey of Texas
The mammals and life zones of Oregon
