000			00501nam a2200193Ia 4500
008			160330s9999||||xx |||||||||||||| ||und||
040			_aCentral Library-NITS
041			_aEnglish
082			_a628.53 _bPER
100			_a Perkins,Henry C
245			_aAir pollution _cby Henry C. Perkins
260			_aTokyo _bMcGraw-Hill _cc1974
300			_axiv, 407p.: ill.
500			_aIncludes index
650			_aAir pollution
650			_aEnviromental engineering
650			_aPollution control
942			_cBK
999			_c3030 _d3030