Gaya APA

Service, P, E., Contra, I, A, O, D. (1976). Lessons in rotary drilling. unit V lesson 3. buoyancy, stability, and trim. (1976). : Texas: Petroleum Extension Service, (PETEX) ,.

Gaya MLA

Service, Petroleum, Extension., Contra, Inter., Ass., Of, Drilling. "Lessons in rotary drilling. unit V lesson 3. buoyancy, stability, and trim.". 1976 : Texas: Petroleum Extension Service, (PETEX) ,, 1976. Text.