TY  - BOOK
ED  - United States. Department of Agriculture.
TI  - Will there be enough food?: the 1981 yearbook of agriculture
U1  - R 630.5 21st ed.
PY  - 1981///
CY  - Washington, D.C.
PB  - United States Government Printing Office
KW  - Agricultural productivity-United States
KW  - Agriculture-United States
KW  - Food supply-United States
N1  - Index: pp 297-302
ER  -