Guidelines for deriving numerical national water quality criteria for the protection of aquatic organisms and their uses
By: by Charles E. Stephan ... [et al.]
Contributors: Stephan, Charles E; United States. Environmental Protection Agency. Office of Water Regulations and Standards
Publisher: U.S. Environmental Protection Agency, Office of Water Regulations and Standards, Criteria and Standards Division
Published: 1985
Place of publication: Washington, D.C
Language: eng
Format: Microform
Number of pages: 98
Subjects: Water quality -- United States -- Measurement; Aquatic biology -- United States
Notes: "Jan. 1985."

"PB85-227049"

Microfiche. Springfield, Va. : National Technical Information Service, [1985]. 2 microfiches ; 11 x 15 cm

s 1985 vau n