TY  - BOOK
TI  - Crop production in dry regions
SN  - 0249440431 (v. 1)
AV  - SB110 .A77 1972
PY  - 1972///-
CY  - London
PB  - Leonard Hill
KW  - Arid regions agriculture
KW  - Arid Regions
KW  - Crop Zones
N1  - Includes bibliographical references.; v. 1. background and principles. -- v. 2. systematic treatment of the principal crops.
ER  -