000			00383nam a2200145Ia 4500
008			221001s1971 xx 000 0 eng d
020			_a070165920
082			_a910.03 DET
100			_aDetwyler, Thomas R.
245		0	_aMan's impact on environment
260			_aNew York _bMcGraw-Hill _c1971
300			_axiii, 731p.
440			_aMcGraw-Hill Series in Geography
942			_2ddc _cBK
999			_c4013 _d4013