Vertically reciprocating auger /

Bibliographic Details
Corporate Authors:	George W. Woodruff School of Mechanical Engineering, NASA/USRA University Advanced Design Program
Other Authors:	Etheridge, Mark
Format:	Government Document Microform Book
Language:	English
Published:	Atlanta, Ga. : The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, [1988]
Series:	NASA contractor report ; NASA CR-182822.
Subjects:	Drilling. Drills. Lunar surface. Reciprocation.
Online Access:	https://purl.fdlp.gov/GPO/LPS65340