A history of the Water Resources Branch of the United States Geological Survey: vol. II, years of increasing cooperation, July 1, 1919 to June 30, 1928
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1939 ◽
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1944 ◽
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1910 ◽
Vol 38
(4)
◽
pp. 535-536
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1910 ◽
Vol 38
(3)
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pp. 360-361
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