000			00389nam a2200157Ia 4500
008			990630s1974||||xx |||||||||||||| ||eng||
041			_aeng
082			_a628.53 _bPER
100			_aPerkins, Henry C. _eAU
245		0	_aAir Pollution
260			_aNew York : _bMcGraw-Hill, _cc1974
300			_aXIV, 407 p. _b: ill
504			_aNN
650			_aAir Pollution _9483847
942			_cBOO
999			_c430931 _d430931