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<br />, <br /> <br />U.S. Weather Bureau <br />1930 Bulletin W <br /> <br />U. S. Weather Bureau <br />nd Climate SUIlllI1ary of the United States supplement through <br />1952. <br /> <br />Wenzel, L.R., and Fishel, V.C. <br />1942 Methods o:t determining permeability o:t water-bearing <br />materials. U.S. Geo. Sur., Water supply paper 887. <br />