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1by Spiers, J. J. K. (John James Kennedy), 1923-“...New Zealand Forest Service,...”
Published 1974
Conference Proceeding Book -
2by Jones, Geoffrey T.“...Northeast Regional Agricultural Engineering Service, Cooperative Extension,...”
Published 1993
Book -
3by Hungerford, Roger D.“...U.S. Forest Service Intermountain Forest and Range Experiment Station in cooperation with Equipment Development Center, Missoula,...”
Published 1976
Book