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Browsing by Subject "Oregon trees"

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Browsing by Subject "Oregon trees"

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  • Oregon 4-H forestry quiz series 
    Oregon State University. Extension Service; Ross, Charles R.; Randall, Warren R. (Corvallis, Or. : Extension Service, Oregon State University, 1993-09)
  • Trees to know in Oregon 
    Oregon State College. Federal Cooperative Extension Service; Ross, Charles R. (Charles Robert), 1908-; Hayes, Hugh (Corvallis, Or. : Federal Cooperative Extension Service, Oregon State College, 1950-01)
  • Trees to know in Oregon (Reprinted May 1959) 
    Oregon State College. Federal Cooperative Extension Service; Ross, Charles R. (Charles Robert), 1908-; Hayes, Hugh (Corvallis, Or. : Federal Cooperative Extension Service, Oregon State College, 1959-05)
  • Trees to know in Oregon (Revised January 1966) 
    Oregon State University. Federal Cooperative Extension Service; Ross, Charles R. (Charles Robert), 1908-; Hayes, Hugh (Corvallis, Or. : Federal Cooperative Extension Service, Oregon State University, 1966-01)

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