TY  - BOOK
AU  - GOODWIN H. DERKE
TI  - PIG MANAGEMENT AND PRODUCTION
SN  - 0 09 110891 8
AV  - 636.408/GOO 2
U1  - 636.408/GOO 
PY  - 1973///
CY  - LONDON
PB  - HUTCHINSON EDUCATIONAL
ER  -