TY  - BOOK
AU  - Smirnov,V.
TI  - Boring practice
U1  - 621.945 20
PY  - 1967///
CY  - Moscow
PB  - Mir
KW  - Drilling and boring
KW  - Drilling and boring machinery
N1  - Translation of Tokarʹ-rastochnik
ER  -