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MLA

Holtan, H. N, et al. "Usdah1-70 Model of Watershed Hydrology." , p.. Print

APA

Holtan, H. N, Lopez, N. C, United States, U. States, & Agricultural Research Service, A. Research Service. (1971). USDAH1-70 model of watershed hydrology.

Chicago

Holtan, H. N., N. C Lopez, United States, and Agricultural Research Service. "USDAH1-70 model of watershed hydrology" (1971): p..