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gregory j buhyoff
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A proposal for meeting the information needs of recreationists on Michigan's Au Sable River
Gregory J. Buhyoff, Richard C. Knopf · Northeast Michigan Regional Planning and Development Commission
55 sayfa · 1972
Rivers / Recreational use / Information services
Attitudes of professional foresters toward the use of forest lands for outdoor recreation
Gregory J. Buhyoff, University of Michigan. School of Natural Resources · Yayınevi bilinmiyor
128 sayfa · 1972
Forest reserves / Recreational use / Forest management