000 00453nam a22001817a 4500
015 _a4714
080 _a551.588
_bSOU
100 _aSouthwick, C. H.
245 _aEcology and the quality of our environment
250 _aSecond
260 _aD. Van Nostrand
_bNew York
_c1972
300 _a426p.
_bfig. , illu.
852 _a2R 1-3
999 _c2177
_d2177