Rotary-percussion drilling : a patent and literature summary /

Bibliographic Details
Main Author:	Kemler, Emory N. (Emory Neudeck), 1906-
Format:	Book
Language:	English
Published:	Spring Park, Minn. : Summary Reports, [1954]
Subjects:	Oil well drilling. Rotary percussion drills > Patents. Boring.

Description
Item Description:	Includes index.
Physical Description:	130 pages in various pagings : illustrations ; 28 cm.
Bibliography:	Bibliography: p. B1-4.