TY  - BOOK
ED  - United States.
TI  - Science in farming
T2  - Its Yearbook of agriculture,
AV  - S21 .A35 1943-1947
U1  - 630.72 
PY  - 1947///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Agriculture
KW  - Research
KW  - United States
N1  - Includes bibliographies
ER  -