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MLA

Ryan, Barry, et al. "Assessment of Wastewater Treatment Facilities In Small Communities." , 19. Print

APA

Ryan, B., United States, U. States, Department of Agriculture, D. of Agriculture, Economic Research Service, E. Research Service, & Agriculture and Rural Economy Division, A. and Rural Economy Division. (1991). Assessment of wastewater treatment facilities in small communities.

Chicago

Ryan, Barry, United States, Department of Agriculture, Economic Research Service, and Agriculture and Rural Economy Division. "Assessment of wastewater treatment facilities in small communities" (1991): 19.