Comparative tests of piston-drill bits
By: by Professor C. R. Forbes and L. M. Cummings.
Contributors: Cummings, Lister Merriken.
Series: Technical series, Bulletin of the School of Mines and Metallurgy, University of Missouri.; v. 2, no. 1, August 1915
Publisher: School of Mines and Metallurgy
Published: 1915
Place of publication: [Rolla, Mo
Language: eng
Number of pages: 16
Subjects: Rock-drills
Other titles: Piston-drill bits, Comparative tests of.
Notes: Caption title.