TY  - BOOK
AU  - BUTLER, John E
TI  - Ruminant immune system : proceeding
U1  - 636.208 960 795 I-5R 
PY  - 1981///
PB  - N.Y.
KW  - VETERINARY IMMUNOLOGY -- CONGRESSES
KW  - IMMUNOLOGY -- CONGRESSES
KW  - RUMINANTIA -- DISEASES -- IMMUNOLOGICAL ASPE
ER  -