TY  - BOOK
T1  - Novel drilling techniques
A1  - Maurer, William C.
LA  - English
PP  - Oxford
PB  - Pergamon Press
YR  - 1968
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217602814976
OP  - 114
NO  - "Issued under the auspices of the International journal of rock mechanics and mining sciences."
CN  - TA 743 M38 1968
KW  - Boring.
ER  -