Preserving wilderness in our national parks
Subtitle: a program for preventing overuse of the national parks through regional recreation planning outside the parks.
Contributors: National Parks and Conservation Association.
Publisher: National Parks and Conservation Association
Published: 1971
Place of publication: Washington
Language: eng
Number of pages: 122
Subjects: Wilderness areas -- United States.; National parks and reserves -- United States.
Notes: "Studies ... commissioned by the National Parks and Conservation Association."