TY  - BOOK
AU  - Van soest peter j.
ED  - 
TI  - Nutritional ecology of the ruminant
SN  - 978-0-8014-2772-5
AV  - 636.20852/VAN 
U1  - 636.20852/VAN Second edition
PY  - 1994///
CY  - London 
PB  - Comstock publishing
ER  -