00399nam a2200145Ia 4500008004100000082001400041100002100055245005700076260004300133300000800176650001800184650001800202653001200220700002100232170901s1975    xx            000 0 und d  a574bK27B  aKelly, Mahlon G. 0aBiologybEvolution and Adaptation to the Environment  aBostonbHoughton Mifflin Companyc1975  a558  aLife sciences  aPure Sciences  aBiology  aMcGrath, John C.