Barbour, R. James Log and Lumber Grades as Indicators of Wood Quality in 20- to 100-Year-Old Douglas-Fir Trees from Thinned and Unthinned Stands / R. James Barbour, Dean L. Parry. -- Portland : USDA Forest Service, 2001. -- 22 s. : obr., tab. ; 28 cm. -- (General Technical Report ; PNW-GTR-510). -- (brož.) : .00

I. Parry, Dean L.

630*832.10+630*832.181+630*55+630*242+630
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