TY  - BOOK
AU  - Samuel,G.Robello
TI  - Downhole drilling tools: theory and practice for engineers and students 
SN  - 1933762136 (alk. paper)
PY  - 2007///
CY  - Houston, Tex.
PB  - Gulf Pub.
KW  - Boring
KW  - Equipment and supplies
KW  - Oil well drilling
KW  - Gas well drilling
N1  - Includes bibliographical references and index
UR  - http://www.loc.gov/catdir/toc/ecip0712/2007009879.html
ER  -