TY  - BOOK
AU  - Cox,Joseph F.
AU  - Jackson,Lyman E.
AU  - Waring,P.Alston
TI  - Crops: a self-teaching course, based on crop management and soil conservation 
AV  - SB185 C6.2
PY  - 1994///
CY  - Madison, Wis.
PB  - J. Wiley
KW  - COSECHAS -
KW  - RENDIMIENTO
KW  - SUELOS -
KW  - CONSERVACION
ER  -