CSN 42 0257-1954
Deep drilling. Rotary drilling. Technology Delivery Regulations

Standard No.

CSN 42 0257-1954

Release Date

1954

Published By

CZ-CSN

Status

Withdraw

Latest

CSN 42 0257-1954

CSN 42 0257-1954 history

• 1954 CSN 42 0257-1954 Deep drilling. Rotary drilling. Technology Delivery Regulations