An operational test of a natural-shaped logging balloon
By: by Virgil W. Binkley and Ward W. Carson.
Contributors: Carson, Ward W.; Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
Series: Research note -- PNW-87.; USDA Forest Service research note PNW -- 87.
Publisher: Pacific Northwest Forest and Range Experiment Station, U.S. Forest Service
Published: 1968
Place of publication: [Portland, Or.]
Language: eng
Subjects: Balloon logging.; Balloons.
Notes: Caption title.

"September 1968."

Includes bibliographical references.