TY  - BOOK
AU  - Sears,Paul B.
TI  - Deserts on the march
SN  - 0806116676
AV  - GF503 .S42 1980
U1  - 333.7/2/0973 
PY  - 1980///
CY  - Norman
PB  - University of Oklahoma Press
KW  - Nature
KW  - Effect of human beings on
KW  - United States
KW  - Desertification
KW  - Agricultural ecology
KW  - Conservation of natural resources
N1  - Includes index
UR  - http://www.archive.org/details/desertsonmarch00sear
UR  - http://www.openlibrary.org/books/OL4404350M
ER  -