Chesapeake Bay low freshwater inflow study

Mode of access: Internet.

Behavior of certain radionuclides released into fresh-water environments; annual report.

Public Health Service publication no. 999-RH.

Bibliography of freshwater wetlands ecology and management.

"Updated and expanded by Stanton J. Kleinert"--Pref.

Comparative toxicity of sewage-effluent disinfection to freshwater aquatic life /

Mode of access: Internet.