Institutional bases for control of nonpoint source pollution under the Clean Water Act, with emphasis on agricultural nonpoint sources /

Mode of access: Internet.

Environmental requirements and pollution tolerance of ephemeroptera /

Oct. 1978.

An annotated bibliography of oysters, with pertinent material on mussels and other shellfish and an appendix on pollution

Mode of access: Internet.

Odors, gases and particulate matter from high density poultry management systems as they relate to air pollution : final report /

"April 15, 1969."

Control of water pollution from cropland.

Issued jointly with the Office of Research and Development, EPA.