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The conservation of artesian water,

By Simpson, Howard E..
Grand Forks, N. Dak., 1926 .
23 p. , At head of title: Artesian water conservation fund. Artesian water paper no. 3. | "The principles of conservation as applied to artesian water" (p. 3-12) reprinted from the Quarterly journal, University of North Dakota, v. 15, no. 4, May, 1925. | "The artesian water law": p. 12-14. 23 cm..

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A method of water prospecting,

By Simpson, Howard E..
Grand Forks, N. Dak., 1927 .
17 p. , At head of title: Artesian water conservation fund: Artesian water paper no. 4. | "Third biennial report of the State water geologist" [1925-1926]: p. 9-16. | List of Artesian water papers: p. 17. 23 cm..

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Geology and ground-water resources of North Dakota,

By Simpson, Howard E..
Washington, U.S. Govt. print. off., 1929 .
v, 312 p. , At head of title: United States Department of the Interior. | Map folded in pocket. 23 cm..

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Methods of reducing the flow of artesian wells,

By Simpson, Howard E..
Grand Forks, N. Dak., 1932 .
7 p. , At head of title: Artesian water conservation fund. Artesian water paper no. 2. 23 cm..

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The ground waters of North Dakota,

By Simpson, Howard E..
Grand Forks, N. Dak., 1932 .
26 p. , At head of title: Artesian water conservation fund...Artesian water paper no. 5. | "Fourth biennial report of the State water geologist [for 1927 and 1928]": p. [18]-26. 23 cm..

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The artesian waters of North Dakota,

By Simpson, Howard E..
Grand Forks, N. Dak., 1935 .
47 p. 23 cm..

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Change in ground water levels in North Dakota,

By Simpson, Howard E..
Grand Forks, N. Dak., 1937 .
23 p. incl. illus. (maps) forms, tables. 23 cm..

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