WARSAW, POLAND - MAY 28, 2014: Word cloud made of world's leading oil industry companies. The top ones by revenue are Shell, Exxon Mobil, BP and Sinopec. Poster #417833700
WARSAW, POLAND - MAY 28, 2014: Word cloud made of world's leading oil industry companies. The top ones by revenue are Shell, Exxon Mobil, BP and Sinopec. Poster #417833700
