00731nam a2200217 4500 0001201 20260608202522.0 260224s1976 xxu 622.338.1 U58 0001201 The bit Revised Houston, Texas Petroleum Extension Service ; International Association of Drilling Contractors, IADC 1976 10/05/05 ; 22/01/03 28 p. Lessons in rotary drilling Unit 1 - Lesson 2 LIBRO Petroleum Extension Service. University of Texas. 7134 Equipos de perforación 115 Trépanos 2418 131553 131553 0 0 0 0 202475 BAAB BAAB 622.338.1 U58 0001201 2026-03-03 200003672 0 622.338.1 U58 0001201 200003672 2026-03-03 01:41:38 2026-03-03 Libro