National environmental study area
Subtitle: a guide
Edition: [Interim ed.]
Publisher: U.S. Dept. of the Interior, National Park Service
Published: 1970
Place of publication: [Washington, D.C.]
Language: eng
Number of pages: 103
Subjects: Nature study; Nature conservation -- Study and teaching -- United States; National environmental study areas -- United States; Outdoor education -- United States; Human ecology -- Study and teaching -- United States
Notes: Cover title

Nine folded sheets of text in pocket

Bibliography: p. 100-102