Timber sale preparation : guide for helicopter logging.

Bibliographic Details
Corporate Author:	United States. Forest Service. Pacific Northwest Region
Format:	Government Document Book
Language:	English
Published:	[Portland, Or.] : Dept. of Agriculturee, Forest Service, Pacific Northwest Region, [1978]
Subjects:	Logging > United States. Timber > United States.

Description
Physical Description:	40 pages : illustrations ; 28 cm.
Bibliography:	Bibliography: pages 39-40.