TY  - BOOK
AU  - English,Peter R.
AU  - Smith,William J.,William John
AU  - MacLean,Alistair
TI  - The sow, improving her efficiency
U1  - 636.4 
PY  - 1977///
CY  - Ipswich
PB  - Farming Press
KW  - Sows
ER  -