000			00313nam a2200145Ia 4500
008			220421s9999||||xx |||||||||||||| ||und||
020			_c140
040			_aET
100			_aDeswal S.S.
245		0	_aEnvironmental Engineering
260			_bDhanpat Rai _aDelhi
300			_a288
500			_a49938
942			_cBK
999			_c55953 _d55953