TY  - PRO
AU  - Ortiz-Monasterio,I.
AU  - McMahon,M.A.
AU  - Sayre,K.D.
AU  - Rajaram,S.
TI  - Genetic progress of CIMMYT germplasm under different levels of nitrogen
PY  - 1991///
KW  - Application rates
KW  - Breeding
KW  - AGROVOC
KW  - Efficiency
KW  - Germplasm
KW  - Mexico
KW  - Nitrogen retention
KW  - Testing
KW  - Varieties
KW  - Triticum aestivum
KW  - Yields
KW  - CIMMYT
N1  - Draft version
ER  -