Troyanovo-1 coal mine (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Troyanovo-1 coal mine" in English language version.

refsWebsite

Global rank English rank

1web.archive.org

1^st place

1^st place

1marica-iztok.com

low place

low place

1globalmethane.org

low place

low place

globalmethane.org

"Summary of Coal Industry in Bulgaria, Coal Mine Methane Country Profiles, Chapter 5, June 2015" (PDF).

marica-iztok.com

"Troyanovo-1 Mine". marica-iztok.com. 2012. Archived from the original on 3 January 2012. Retrieved 7 June 2013.

web.archive.org

"Troyanovo-1 Mine". marica-iztok.com. 2012. Archived from the original on 3 January 2012. Retrieved 7 June 2013.