Au Sable River study, July 21-22, 1975.
Publisher: Dept. of Natural Resources, Environmental Protection Bureau
Published: 1977
Place of publication: [Lansing]
Language: eng
Number of pages: 65
Subjects: Water quality -- Michigan -- Au Sable River.
Notes: Bibliography: p. 64-65.
Cover title.
"Pub. no. 4833-5135."