1 "Fișier:2016-oil-sands-discovery-centre-osdc-facts-about-albertas-oil-sands-and-its-industry.pdf".

Fișier:2016-oil-sands-discovery-centre-osdc-facts-about-albertas-oil-sands-and-its-industry.pdf

English Facts about Alberta’s oil sands and its industry German Fakten zu den Ölsanden und der Ölsandindustrie von Alberta (Kanada) determination method...