TY  - BOOK
AU  - Forbes, T. J.
TI  - Factors affecting the productivity of permanent grassland; a national farm study
U1  - 633.2 
PY  - 1980///
CY  - Hurley, England
PB  - Grassland Research Institute
KW  - Pastizales
KW  - Pastos forrajeros
KW  - Rendimiento
KW  - Pastos
KW  - Efecto del medio ambiente
ER  -