TY  - BOOK
AU  - Chugh,C.P.
TI  - High technology in drilling and exploration
SN  - 9061914779
U1  - 622.15 
PY  - 1992///
CY  - Rotterdam
PB  - A.A. Balkema
KW  - Boring
KW  - Boring machinery
KW  - MCE
ER  -