TY  - BOOK
AU  - Ilyasov,E.P.
AU  - Ioanesian,Yu R.
AU  - Ioanesian,Yu R.
ED  - World Petroleum Congress (12th : 1987 26 abr/1 may : Houston)
TI  - Ultra deep drilling for the investigation of the earth's crust
U1  - 060-665.5 W938 1987 
ER  -