000			00711nam a2200265Ia 4500
001			49410
005			20250221155356.0
008			250214s9999||||xx |||||||||||||| ||und||
020			_a8121915473
100			_aDuggal, K N
245		0	_aElements of environmental engineering
250			_arev.
260			_bNew Delhi
260			_bS Chand
260			_c2007
300			_axvii, 440p.
500			_aIncludes bibliographical references and index.
650			_aEnvironmental engineering
650			_aSewerage and sewage treatment
650			_aWater Quantity
650			_aWater supply Sources
650			_aWater supply and drainage buildings
650			_aWater treatment
942			_cBK
999			_c65200 _d65200