Range:
Subjects: Chemical activation; Sudan; Petroleum
Subjects: Iraq; Geology; Petroleum
Subjects: Petroleum; Pipelines
Subjects: Petroleum
Subjects: Mineral oils; Oils; Petroleum
Subjects: Employees; Iraq; Petroleum; Vitamin C
Subjects: Iraq; Maysan; Hydrocarbons; Petroleum
Subjects: Algorithms; Mathematical analysis; Operations research; Simulation methods; Petroleum
Subjects: Petroleum; Sulfur
Subjects: Energy; Industries; Management; Mathematical models; Petroleum
Subjects: Iraq; Organic chemistry; Petroleum
Subjects: Libya; Statistics; Corporations; Petroleum; Petroleum products
Subjects: Frogs; Pollution; Fishes; Petroleum; Toxicology
Subjects: Red Sea Coast; Geology; Petroleum
Subjects: Industrial chemistry; Iraq; Petroleum
Subjects: Basra; Fishes; Hydrocarbons; Iraq; Petroleum
Subjects: Africa; China; Competition; Petroleum; United States
Subjects: Industries; Sudan; Environmental policy; Petroleum; Standards
Subjects: Iraq; Soils; Geology; Petroleum
Subjects: Statistics; Sudan; Petroleum
Subjects: Arab world; Statistics; Petroleum
Subjects: Statistics; Economic aspects; Petroleum
Subjects: Corporations; Industrial applications; Petroleum; Petroleum products
Subjects: Iraq; Maysan; Petroleum
Subjects: Commerce; Oman; Petroleum; Statistics
Subjects: Egypt; Statistics; Industries; Petroleum
Subjects: Iraq; Organic compounds; Hydrocarbons; Petroleum
Subjects: Jordan; Statistics; Economic aspects; Petroleum
Subjects: Oman; Statistics; Corporations; Economic aspects; Petroleum
Subjects: Oman; Statistics; Economic aspects; Natural gas; Petroleum
Subjects: Kuwait; Statistics; Corporations; Petroleum
Subjects: Iraq; Rocks; Geology; Petroleum; Petroleum engineering
Subjects: Jordan; Statistics; Fuels; Petroleum