Studies on two stage sludge digestion, 1928-29.
By: <Printed by authority of the state of Illinois.>
Series: Bulletin; no. 29
Published: 1930
Place of publication: Urbana, Ill
Language: eng
Number of pages: 92
Subjects: Sewage -- Purification.
Notes: "Literature cited": p. 92.
At head of title: State of Illinois. Department of registration and education. Division of the state Water survey.
"Bulletins of the state water survey": 1 leaf at end.