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1by Jones, Geoffrey T.“...Northeast Regional Agricultural Engineering Service, Cooperative Extension,...”
Published 1993
Book -
2by Rothwell, R. L.“...Northern Forest Research Centre, Canadian Forestry Service, Fisheries and Environment Canada,...”
Published 1978
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