TY  - BOOK
AU  - Chugh, Chandra Prakash
AU  - Chugh, Chandra Prakash
TI  - Drilling Technology Handbook
U1  - HOD3:13g 
PY  - 1979///
CY  - Bombay
PB  - Oxford & Ibh Pub. Co.
KW  - HOD3:13g
ER  -