TY  - BOOK
AU  -  Krull,Charles F.
ED  -  International Maize and Wheat Improvement Center.
TI  -  Results of the fourth Inter-American spring wheat yield nursery 1963 -1964 / 
PY  - 1967///
CY  -  Mexico : 
PB  -  International Maize and Wheat Improvement Center 
KW  -  Wheat
KW  -  Varieties
KW  -  Tables
KW  -  Periodicals
KW  -  Field experiments
KW  -  Yields
N1  -  Includes bibliographical references
ER  -