TY  - RE
AU  - Borlaug,N.E.
TI  - Wheat improvement program
PY  - 1946///
CY  - [s.l.]
PB  - [s.n.], 
KW  - High-yielding varieties
KW  - AGROVOC
KW  - Mexico
KW  - Triticum aestivum
N1  - Draft, tables
ER  -