TY  - BOOK
AU  - Smith,C.Wayne
TI  - Crop production: evolution, history, and technology 
SN  - 0471079723
PY  - 1995///
CY  - New York
PB  - John Wiley & Sons
KW  - Fields crops
KW  - United States
N1  - Bibliography : p. 455-457
ER  -