00313nam a2200133Ia 4500003000400000005001700004008004000021040000700061041000800068082001100076100001700087245003300104260004200137OSt20231221145006.0210210b1965   xxu||||| |||| 00| 0 eng d  cAL  aeng  a590/68  aDILLON (L S)  aPrinciples of animal biology  aNew YorkbThe Macmillan Companyc1965