TY  - BOOK
AU  - Sprague, George F., ed.
TI  - Corn and corn improvement
T2  - American Society of Agronomy; agronomy; no.18
U1  - 633.1 L7 
PY  - 1977///
CY  - Madison (Wisconsin)
PB  - American Society of Agronomy
KW  - George F. Sprague
KW  - Corn
ER  -