00427nam a2200169Ia 4500008004100000020001500041082001400056100002100070245002400091260004500115300000800160650001800168650001800186653001200204700002000216700002100236170901s1976    xx            000 0 und d  a0070191476  a574bE42B  aEhrlich, Paul R. 0aBiology and Society  aNew YorkbMcGraw-Hill Book Companyc1976  a564  aLife sciences  aPure Sciences  aBiology  aBrown, Irene L.  aHolm, Richard W.