TY  - BOOK
AU  - Etgen william m.
ED  - 
TI  - Dairy cattle feeding and management
SN  - 0-471-71199-3
AV  - 636.214/ETG 
U1  - 636.214/ETG Sixth edition
PY  - 0000///John wiley & sons
CY  - 636.214/ETG
PB  - New york 
ER  -