TY  - BOOK
AU  - Litzenberger,Samuel C.
ED  - United States.
TI  - Guide for field crops in the tropics and the subtropics
PY  - 1974///
CY  - Washington, D.C.
PB  - U.S. Goverment Printing Office
KW  - Field crops
KW  - Tropics
ER  -