Węgiel

Redakcja
15-07-2015

http://www.iea.org/publications/freepublications/publication/KeyWorld2014.pdf

http://www.iea.org/Textbase/npsum/MTCMR2014SUM.pdf

REKLAMA

http://www.bloomberg.com/news/articles/2015-07-13/the-latest-sign-that-coal-is-getting-killed

REKLAMA