00326nam a2200109Ia 4500008004100000040003800041100002800079245003400107260004600141300001700187653001200204220119s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aSimpson, George Gaylord 0aPrinciples of animal texonomy  bOXFORD AND I B H PUB. CO.aCalcuttac1961  axii,237 p p.  aZoology