http://hdl.handle.net/1957/7547 Thu, 20 Jun 2013 05:13:43 GMT 2013-06-20T05:13:43Z http://hdl.handle.net/1957/8490 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 Thu, 01 Feb 1979 00:00:00 GMT http://hdl.handle.net/1957/8490 1979-02-01T00:00:00Z http://hdl.handle.net/1957/8466 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 Mon, 01 Oct 1984 00:00:00 GMT http://hdl.handle.net/1957/8466 1984-10-01T00:00:00Z http://hdl.handle.net/1957/8465 Oregon's forest resources : their contribution in the state's economy Brodie, J. Douglas (John Douglas), 1938-; McMahon, Robert Ormond; Gavelis, William H.; Oregon State University. Forest Research Laboratory Fri, 01 Sep 1978 00:00:00 GMT http://hdl.handle.net/1957/8465 1978-09-01T00:00:00Z http://hdl.handle.net/1957/8464 Mycorrhizae on Douglas fir and Ponderosa pine seedlings Wright, Ernest, 1899-; Oregon State University. Forest Research Laboratory Tue, 01 Jun 1971 00:00:00 GMT http://hdl.handle.net/1957/8464 1971-06-01T00:00:00Z