00313nam a2200109Ia 450000500170000000800410001702000150005805000160007310000230008924500560011226000350016820251229192611.0251229s9999    xx            000 0 und d  a0852360819  aSF 395 .E5   aEnglish, R. Peter. 4aThe sow improving her efficiency.cR. Peter English  aIpswichb Farming Press; 1984.