A test of unmanned registration stations on wilderness trails
Subtitle: factors influencing effectiveness
By: by Wiley D. Wenger, Jr.
Series: U.S. Forest Service research paper PNW ;; 16
Publisher: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture
Published: 1964
Place of publication: Portland, Or
Language: eng
Number of pages: 48
Subjects: Wilderness areas -- Recreational use.
Notes: Includes bibliographical references.