The nation
By: George Peter Gregory.
Contributors: Carnegie-Mellon University. Social Studies Curriculum Development Center.; Western Pennsylvania Conservancy.
Series: Environmental concerns
Publisher: Harcourt Brace Jovanovich; Harcourt School Publishers
Published: 1977
Place of publication: New York
Language: eng
Number of pages: 122
Subjects: Ecology -- Study and teaching -- United States.; Environmental protection -- Study and teaching -- United States.
Notes: "A co-operative project [of] Social Studies Curriculum Center, Carnegie-Mellon University [and] Western Pennsylvania Conservancy."

"A preliminary edition of parts of this book was published under the title: Environment and change : a social studies unit...c1972."

Includes bibliographical references and index.