000			00408pam a2200145a 44500
082			_a621.2 _bZa16t
100			_aZangar, Carl Nicholas
245	1		_aTHEORY AND PORBLEMS OF WATER PERCOLATION
260			_aDenver _bTechnical Information Office _c1957
300			_a76
440			_aU. S. Bureau Of Reclamation Engineering Monographs _vNo. 8
650			_aHydraulics
964			_gCIRC
997			_a13144 C
999			_c435051 _d435051