Mandatory certification program for wastewater treatment plant operators in the State of Washington /
Dept. of Ecology.

Description

Corporate Author

Washington (State). Department of Ecology.

Language(s)

English

Published

[Olympia] : The Department, 1974.

Subjects

Sewage disposal plants > Sewage disposal plants / Washington (State) > Sewage disposal plants / Washington (State) / Directories.
Sewage > Sewage / Purification > Sewage / Purification / Washington (State) > Sewage / Purification / Washington (State) / Directories.

Physical Description

[65] p. ; 28 cm.

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