000			00350nam a2200145Ia 4500
008			180611s9999||||xx |||||||||||||| ||und||
020			_a0-87371-283-8
041			_aen
082			_a627.56
100			_aWALTON, William. C.
245		0	_aPrinciples of Groundwater Engineering
260			_aUSA _bLewis Pub _c1991
300			_axx, 546p.
942			_cLL
999			_c9160 _d9160