TY  - BOOK
AU  - Skogerboe, Gaylord V.
AU  - Sahni, Venus T., coaut.Walker, Wynn R., coaut.
TI  - Selected irrigation return flow quality abstracts 1968-1969-. first annual issue / by Gaylord V. Skogerboe, Venus T. Sa-hni, Wynn R. Walker
CY  - Washington, D.C. : Environmental Protection Agency
ER  -