Deserts on the march

Paul B. Sears
Bok · Engelsk · 1949

Utgitt	London : Routledge & Kegan Paul , 1949
Omfang	XI, 181 s. : ill.
Opplysninger	Først utgitt: Norman : University of Oklahoma Press, 1935
Emner	Agricultural ecology - United States Conservation of natural resources - United States Desertification Desertification - United States Man - Influence on nature - United States