TY  - BOOK
T1  - Deserts on the march.
DA  - [1959]
CY  - Norman,
AU  - Sears, Paul B.
ET  - [3d ed., rev.]
CN  - S954.U6 S4 1959
CN  - S954.U6
PB  - University of Oklahoma Press
PP  - Norman,
PY  - [1959]
ID  - 77415
KW  - Natural resources
KW  - Agriculture
TI  - Deserts on the march.
ER  -