Vacuum collection of Douglas-fir pollen for supplemental mass pollinations /

Bibliographic Details
Corporate Author:	Pacific Northwest Research Station (Portland, Or.)
Other Authors:	Copes, Donald L.
Format:	Government Document Book
Language:	English
Published:	[Portland, Or. (319 S.W. Pine St., Portland 97208)] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, [1991]
Series:	Research note PNW ; 503.
Subjects:	Douglas fir > Pollen > Northwestern States. Pollination > Northwestern States.