Subjects: Water Purification / Titles: Activated sludge studies, 1920-1922 / Copyright: Public domain - Digital Collections - National Library of Medicine Search Results

Start Over Subjects Water Purification ✖ Titles Activated sludge studies, 1920-1922 ✖ Copyright Public domain ✖

1. Activated sludge studies, 1920-1922

Author(s):: Illinois State Water Survey, author, issuing body.
Publication:: Urbana, Illinois : State of Illinois, Department of Registration and Education, Division of the State Water Survey, [1923]
Subject(s):: Sewage
Water Purification
Illinois