NLM Digital Collections

Search

Start Over Authors Illinois State Water Survey, author, issuing body. ✖Remove constraint Authors: Illinois State Water Survey, author, issuing body. Copyright Public domain ✖Remove constraint 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

Refine by:

  • Illinois State Water Survey, author, issuing body.1