000			00394nam a2200145Ia 4500
008			150518s1979||||xx |||||||||||||| ||und||
020			_a878721681
082			_a301.31 _bGRE
100			_aGreenwood, Ned H.
245			_aHuman environments and natural systems _cGreenwood, Ned H.
250			_a2d ed.
260			_aNorth Scituate _b Duxbury Press _c1979
300			_axii, 548 p.
942			_cBK
999			_c16873 _d16873