Always a river
Subtitle: supplemental environmental education curriculum on the Ohio River and water, grades K-12
Contributors: United States. Environmental Protection Agency. Office of Research and Development
Publisher: U.S. Environmental Protection Agency
Published: 1991
Place of publication: [Cincinnati, Ohio?]
Language: eng
Format: Microform
Number of pages: 284
Subjects: Ecology -- Study and teaching -- Ohio River Valley; Water -- Study and teaching -- United States; Ohio River -- Environmental conditions -- Study and teaching; Ohio River Valley -- Environmental conditions -- Study and teaching
Notes: "Office of Research and Development"--Cover

Shipping list no.: 99-0850-M

"September 1991"--Cover

"AWBERC-91-09"--Cover

Includes bibliographical references

Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., [1999] 4 microfiches : negative