Audience attention as a basis for evaluating interpretive presentations
By: Ronald E. Dick, Erik Myklestad, J. Alan Wagar.
Contributors: Myklestad, Erik.; Wagar, J. Alan.
Series: USDA Forest Service research paper PNW -- no. 198.; USDA Forest Service research paper PNW -- 198.
Publisher: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station
Published: 1975
Place of publication: Portland
Language: eng