TY  - BOOK
AU  - Yingfeng,Meng
ED  - Southwestern Petroleum Institute
ED  - World Petroleum Congress (12th : 1987 26 abr/1 may : Houston)
ED  - Southwestern Petroleum Institute
TI  - Drilling model theory and optimal drilling method
U1  - 060-665.5 W938 1987 
ER  -