Não informado. (1959). Cooperative Groundwater Report. State Geological Survet, State Water Survey.
Citace podle Chicago (17th ed.)Não informado. Cooperative Groundwater Report. Champaign, Ill: State Geological Survet, State Water Survey, 1959.
Citace podle MLA (8th ed.)Não informado. Cooperative Groundwater Report. State Geological Survet, State Water Survey, 1959.
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