 | Strommen, Norton D. 4n | (1) |
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 | Strommen, Norton D. 4n; Monthly precipitation probabilities by climatic divisions : 23 Eastern States from the Great Lakes to the Gulf Coast / . Washington, D.C. : U.S. Dept. of Agriculture, Economic Research Service, and U.S. Dept. of Commerce, Environmental Science Services Administration, 1969. | |
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