TY  - BOOK
AU  - Parra,F.R.
ED  - Petróleos de Venezuela, PDVSA
ED  - World Petroleum Congress (10th : 1979 sept. 9-14 : Bucharest)
ED  - Petróleos de Venezuela, PDVSA
TI  - World producing capacity of hydrocarbons
U1  - 060-665.5 W938 1979 
ER  -