Economic impact of change in pH regulation, R76-21 /

"Project no. 80.112."

Surfactant effects on pesticide photochemistry in water and soil /

Grant no. R-802959.

Water surfactant no.3, study number 32. Report of a study conducted by Analytical Reference Service

Mode of access: Internet.

Economic impact of proposed water quality and effluent standard amendments for water in the Sangamon River Basin /

"November 1986."

Summary of selected computer programs produced by the U.S. Geological Survey for simulation of ground-water flow and quality, 1994 /

Mode of access: Internet.

Waste stabilization lagoon microorganism removal efficiency and effluent disinfection with chlorine /

Mode of access: Internet.

Biomonitoring for control of toxicity in effluent discharges to the marine environment.

Mode of access: Internet.

Demineralization of carbon-treated secondary effluent by spiral-wound reverse osmosis process /

Mode of access: Internet.

Long term recharge of trickling filter effluent into sand /

Mode of access: Internet.

An introduction to the microbiology of water and sewage for engineering students,

Extra page inserted numbered 211a.

Economic impact analysis of effluent limitations and standards for the plastics molding and forming industry /

Mode of access: Internet.

An economic analysis of effluent standards for BOD, ammonia, total suspended solids, and disinfection : case study of a modern treatment plant /

"Project no. 80.160."

An Economic impact study of petition for regulatory relief from phosphorus effluent limits, city of Pana : R84-44 : final report /

"Printed: April 1988."

Economic impact of a proposed change in the ammonia effluent standards, R77-6 /

"Project no. 80.094."