Environmental effects of increased coal utilization : ecological effects of gaseous emissions from coal combustion /

Mode of access: Internet.

Proceedings of the Second American-Soviet Symposium on the Use of Mathematical Models to Optimize Water Quality Management, Bloomfield Hills, Michigan, USA, August 27-30, 1979 /

Mode of access: Internet.

Forest harvest, residue treatment, reforestation and protection of water quality /

Tables.

Distribution of phytoplankton in Alabama lakes /

Issued July 1977.

Water quality indices : a survey of indices used in the United States /

Includes bibliographical references.

Contaminants associated with direct and indirect reuse of municipal wastewater /

Contract 68-02-2257.

Application of numerical classification in ecological investigations of water pollution /

Mode of access: Internet.

Distribution of phytoplankton in Virginia lakes /

Mode of access: Internet.

Distribution of phytoplankton in Mississippi lakes /

Mode of access: Internet.

Distribution of phytoplankton in South Carolina lakes /

Mode of access: Internet.

Sensory chemical pesticide warning system : experimental, summary and recommendations : final report covering the period June 1974-July 1975 /

Mode of access: Internet.

Investigation of petroleum in the marine environs of the Strait of Juan de Fuca and northern Puget Sound /

Mode of access: Internet.

Radiofrequency radiation levels and population exposure in urban areas of the Eastern United States /

Issued May 1978.

Recycling of water in poultry processing plants : interim technical report /

"Ecological research series" appears in publication in error.

Loading functions for assessment of water pollution from nonpoint sources /

Item 431-I-12