The recording quizboard
Subtitle: a device for evaluating interpretive services
By: J. Alan Wagar.
Contributors: Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research paper PNW -- 139.; Research paper PNW -- 139.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service
Published: 1972
Place of publication: Portland, Or
Language: eng
Number of pages: 12
Subjects: Information display systems; Teaching -- Aids and devices; National parks and reserves -- United States -- Interpretive programs
Notes: Cover title.

Includes bibliographical references.