TY - BOOK AU - English,Peter R. AU - MacLean,Alastair AU - Smith,William J. TI - The sow-improving her efficiency SN - 0852360819 PY - 1977/// CY - Suffolk PB - Farming Press KW - Hogs KW - sears KW - Sows KW - Swine KW - Breeding N1 - Includes index ER -