Sonoran Desert Plants: An Ecological Atlas - Raymond M. Turner, Janice Emily Bowers, Tony L. Burgess - Google Books

http://books.google.de/books?lr=&hl=de&id=IbKmK2_Tn74C&

The Sonoran Desert, a fragile ecosystem, is under ever-increasing pressure from a burgeoning human population. This ecological atlas of the region's plants, a greatly enlarged and full revised version of the original 1972 atlas, will be an invaluable…