Freshwater marsh.
Contributors: U.S. Fish and Wildlife Service.
Series: Habitat pac
Publisher: Office of Extension Education, U.S. Fish and Wildlife Service
Published: 1980
Place of publication: Washington, D.C
Language: eng
Subjects: Marsh ecology -- United States; Freshwater ecology -- United States; Environmental education -- United States
Notes: Cover title.

"This package is a trial version of the Fish and Wildlife Service's new environmental education materials"--P. [4] of cover.