Two thinnings of douglas-fir with crawler tractors
Subtitle: time differences
By: Rudolf Kangur.
Contributors: Oregon State University. Forest Research Laboratory.
Series: Research paper -- 7.; Research paper (Oregon State University. Forest Research Laboratory) -- 7.
Publisher: Forest Management Research, Forest Research Laboratory, Oregon State University
Published: 1967
Place of publication: Corvallis, Or
Language: eng
Number of pages: 26
Subjects: Forest thinning -- Oregon.; Douglas fir -- Harvesting -- Oregon.; Crawler tractors -- Oregon.
Notes: "March 1967."