Vertically reciprocating auger
By: Mark Etheridge, [et.al.].
Contributors: Etheridge, Mark.; George W. Woodruff School of Mechanical Engineering.; NASA/USRA University Advanced Design Program.
Series: NASA CR -- 182822.; NASA contractor report -- NASA CR-182822.
Publisher: The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology
Published: 1988
Place of publication: Atlanta, Ga
Language: eng
Format: Microform
Subjects: Drilling.; Drills.; Lunar surface.; Reciprocation.
Notes: "Advanced NASA / University Design Program."

Also available via Internet from the NASA Technical Report Server web site. Address as of 11/28/05: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900015142%5F1990015142.pdf ; current access is available via PURL.

Microfiche. [Washington, D..C. : National Aeronautics and Space Administration, 1990]. 1 microfiche.