Trekhsharoshechnye dolota
Subtitle: oblastʹ primenenii͡a︡ i rat͡s︡ionalʹnai͡a︡ otrabotka ikh
By: F.D. Zenkov.
Publisher: Gos. nauchno-tekhn. izd-vo nefti͡a︡noĭ i gorno-toplivnoĭ lit-ry
Published: 1955
Place of publication: Moskva
Language: rus
Format: Microform
Number of pages: 167
Notes: Microfilm. Washington, D.C. : Library of Congress Photoduplication Service, 1955. On 1 microfilm reel with other items ; 35 mm.
Bibliography: p. 166-167.
Master microfilm held by: DLC.