TY  - BK
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
TI  - Soil productivity:  Diagnosis and planning
T2  - CIMMYT Maize Training Materials
U1  - 633.150715 
PY  - 1980///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT, 
KW  - Soil chemicophysical properties
KW  - AGROVOC
KW  - Soil texture
KW  - Soil water content
KW  - Teaching materials
KW  - Training programmes
KW  - Soil fertility
KW  - CIMMYT
ER  -