Source : http:// en.ria.ru /infographics/20130320/180136761/The-Worlds-Richest-Countries-by-Oil-and-Gas-Reserves.html
Tag: qatar
Interactive Map – Mapping the Arab world
All you need to know about OPEC [Infographic]
Source   http://www.mint.com/
The global natural gas market
Source : http://en.rian.ru
OPEC: history, structure, functions
(via)
