TY  - BOOK
AU  - Pfeffer, Ernst
TI  - Nitrogen and phosphorus nutrition of cattle: reducing the environmental impact of cattle operations
U1  - 636.208.52 P47N 
PY  - 2005///
CY  - Oxfordshire
PB  - CABI
KW  - Cattle-Feeding and feeds
KW  - Nitrogen in animal nutrition
ER  -