Madison, Wis.: University of Wisconsin-Extension, Cooperative Extension Programs, 1978
Physical Details
75 slides : col. + 1 sound cassette + script
Non-circulating.
A-V productions prepared under Extension Service-USDA contract No. 12-05-300-313 with Cooperative Extension Programs, University of Wisconsin-Extension in cooperation with U.S. Forest Service Research and U.S. Forest Service State and private forestry.