00283nam a2200133Ia 4500020000900000082000800009100001900017245004600036250000600082260003400088300000800122500001000130650000900140  aNULL  a574  aButler, J.A.V. 0aModern Biology And Its Human Implications  a-  aLondonbHodder And Stoughton.  a119  a20498  a-NA-