000			00314nam a2200145Ia 4500
008			220421s9999||||xx |||||||||||||| ||und||
020			_c700
040			_aET
100			_aK.N SINGH
245		0	_aENVIORNMENT MANAGEMENT
260			_bCOMMONWEALTH PUB. _aDELHI
300			_a264
500			_a14829
942			_cBK
999			_c21072 _d21072