Rotary drilling handbook on accident prevention and safe operating practices.
Ellithorpe, Glenn L
Rotary drilling handbook on accident prevention and safe operating practices. - New Delhi Central Ground Water Board Ministry of Agriculture Goverment 1971 - 67p.
632.006.2 / B325L
Rotary drilling handbook on accident prevention and safe operating practices. - New Delhi Central Ground Water Board Ministry of Agriculture Goverment 1971 - 67p.
632.006.2 / B325L