Browsing Forest Research Laboratory by Author "Helsing, Guy G."

Now showing items 1-2 of 2

Marine wood maintenance manual : a guide for proper use of Douglas-fir in marine exposures

Morrell, Jeffrey J.; Helsing, Guy G.; Graham, R. D. (Robert D.); Oregon State University. Forest Research Laboratory (Corvallis, Or. : Forest Research Laboratory, College of Forestry, Oregon State University, 1984-10)
Wood pole maintenance manual : inspection and supplemental treatment of douglas-fir and western redcedar poles

Graham, R. D. (Robert D.); Helsing, Guy G.; Oregon State University. Forest Research Laboratory (Corvallis : Forest Research Laboratory, Oregon State University, 1979-02)