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_d1229
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020 _a716709457
082 _a577
_bSCI
_223
245 2 _aA SCIENTIFIC American book: the biosphere
260 _aSan Francisco
_bW.H.Freeman
_c1970
300 _aviii, 134 p.
500 _aIncludes bibliographies & index.
650 _aEcology
942 _cR