Tree shaking machine aids cone collection in a Douglas-fir seed orchard /

Bibliographic Details
Main Author:	Copes, Donald L.
Corporate Author:	Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Other Authors:	Randall, William K.
Format:	Government Document Book
Language:	English
Published:	[Portland, Or.?] : U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, [1983]
Series:	Research note PNW ; 406.
Subjects:	Forest machinery > United States. Seed orchards > United States. Trees > Seeds.

Description
Item Description:	Caption title. Distributed to depository libraries in microfiche. "July 1983."
Physical Description:	8 pages : illustrations ; 28 cm.
Bibliography:	Includes bibliographical references.