Author
Bihar (India). Forest Dept
3
California Forest Experiment Station
2
California Forest and Range Experiment Station
2
Metsäntutkimuslaitos
2
Pakistan Forest Institute
2
Bundesamt und Forschungzentrum für Wald (Austria)
1
Forest Research and Information Centre (Nepal)
1
Great Britain. Forestry Commission
1
Indian Council of Forestry Research and Education
1
Inose, Toraz̄o
1
Instituto Forestal de Investigaciones y Experiencias (Spain)
1
Japan. Rinʼyach̄o
1
Minnesota. Division of Forestry
1
Neil, P. E.
1
Nōshōshō Ringyō Shikenjō (Japan)
1
N̄orinsh̄o Ringȳo Shikenj̄o (Japan)
1
Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
1
Taiwan sheng lin ye shi yan suo
1
University of Minnesota. School of Forestry
1
Vịên khoa học lâm nghịêp Vịêt Nam
1