TY  - BOOK
ED  - United States.United States Department of Agriculture.Agricultural Research Service
TI  - Animal units of livestock fed annually 1909 to 1957 
T2  - Statistical bulletin no. 235
U1  - 73/338.14 
CY  - Washington
PB  - United States Department of Agriculture
KW  - Organic fertilizers
KW  - United States
ER  -