Որոնման արդյունքները - American Petroleum Institute API

Combustibles Combustibles fs̤iles Fossil fuels Fuels energa̕ energy energy sources fuentes de energa̕ gas natural industria del petrl̤eo industria petroqum̕ica natural gas oil oil industry operaciones operations petrl̤eo petrochemical industry petroleum procesos processes refinacin̤ refining reservoirs reservorios wellheads