TY  - BOOK
AU  - Haystead,Ladd
AU  - Fite,Gilbert Courtland
TI  - The agricultural regions of the United States
U1  - 333.76 
PY  - 1955///
CY  - Norman
PB  - University of Oklahoma Press
KW  - Agriculture
KW  - United States
N1  - "Notes on sources and additional reading": p. 276-280
ER  -