TY  - GEN
AU  - Palkovic,S
AU  - Havier,J
AU  - Nádvorník,P
TI  - [Mechanical drill bit]
SN  - 0035-9351
PY  - 1971///0121
KW  - Trephining
KW  - instrumentation
N1  - Publication Type: Journal Article
ER  -