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Flora of South Dakota; an illustrated check-list of flowering plants, shrubs and trees of South Dakota,

By Over, William H..
Vermillion, The University of South Dakota, 1932 .
161 p. 23 cm..

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Amphibians and reptiles of South Dakota,

By Over, William H..
Vermillion, S.D., 1923 .
34 p. , At head of title: South Dakota Geological and Natural History Survey. Freeman Ward, State Geologist. | Bulletin, University of South Dakota, ser. XXIII, no. 10. October, 1923.

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A preliminary report of a biological survey of the lakes of South Dakota,

By Over, William H..
Vermillion, S.D., 1927 .
18 p. , Bulletin, University of South Dakota, ser. 27, no. 6. March, 1927.

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