TY  - BOOK
AU  - Chugh, C. P.
TI  - Manual of drilling technology
U1  - 621.952 
PY  - 1985///
CY  - New Delhi
PB  - Oxonian
KW  - Drilling
KW  - Rock mechanics
KW  - Tool engineering
N1  - Includes bibliographical references and index
ER  -