000			00357nam a2200133Ia 4500
003			PILC
008			150929s1991||||xx |||||||||||||| ||und||
082			_aR 574 As3e
100			_aAshworth, William
245		4	_aThe encyclopedia of environmental studies
260			_aNew York : _bFacts on File, _c1991.
300			_aviii, 470 p. ; 29 cm.
942			_2ddc _cREF
999			_c23305 _d23305