TY  - BOOK
AU  - Krar, Stephen F.
AU  - xx, 686 p.
AU  - Oswald, J. William
AU  - Title
TI  - Drilling Technology
SN  - 082730210X
PY  - 1977///
CY  - New York
PB  - Delmar Publishers
KW  - Drilling and boring
N1  - Includes index
ER  -