000			00353nam a2200145Ia 4500
008			180613s9999||||xx |||||||||||||| ||und||
020			_a873712838
041			_aen
082			_a627.56
100			_aWALTON, William C.
245		0	_aPrinciples of groundwater engineering
260			_aMichigan _bLewis pub. _c1991
300			_axx, 546p.
942			_cSR
999			_c80410 _d80410