00410nam a2200157Ia 4500008004100000020001500041082001600056100001800072245004000090260004800130300000800178650001800186650002400204653001400228653001000242170901s1981    xx            000 0 und d  a0333256697  a595.1bB27B  aBarrett, John 0aBiochemistry of Parasitic Helminths  aLondonbMacmillan Publishing Co. Inc.c1981  a308  aPure Sciences  aZoological sciences  aParasites  aWorms