TY  - BK
ED  - Mexico. International Maize and Wheat Improvement Center
TI  - CIMMYT 1969-1972 Annual report:  On maize and wheat improvement
U1  - 633.1 
PY  - 1970///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT, 
N1  - Includes: 1969-70, 1970-71, 1972
ER  -