Sequential nitrification-denitrification in a plug flow activated sludge system /

Mode of access: Internet.

A gas-exchange system for assessing plant performance in response to environmental stress /

Mode of access: Internet.

Development of an interactive system to study sub-lethal effects of pollutants on the behavior of organisms /

"Grant no. R803244."

Data base system for State water quality management information system /

Mode of access: Internet.

An identification system for occupationally hazardous materials.

Mode of access: Internet.

Draft report to Congress on the coastal barrier resources system as required by section 10 of P.L. 97-348, the Coastal Barrier Resources Act of 1982.

"April 1985."

Health effects of a wastewater treatment system /

Issued Oct. 1978.

CETIS, Complex Effluents Toxicity Information System : data encoding guidelines and procedures /

"CR807240."

User's guide for the gas chromatography automation system /

Mode of access: Internet.

CETIS : Complex Effluents Toxicity Information System : CETIS retrieval system user's manual /

Mode of access: Internet.

Overland recycling system for animal waste treatment /

Jan. 1979.

Performance evaluation of the aerated lagoon system at North Gulfport, Mississippi /

Mode of access: Internet.

Lawrence Avenue underflow sewer system : interim report, planning and construction /

"March 1980."

Uniform system of accounts for street railroad corporations. Adopted September 22, 1908.

Cover title.

Evaluation of the refuse management system at the Jersey City operation breakthrough site /

Mode of access: Internet.