Substitute natural gas (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Substitute natural gas" in English language version.

refsWebsite

Global rank English rank

low place

low place

1web.archive.org

1^st place

1^st place

1,880^th place

1,218^th place

low place

low place

dakotagas.com

Dakota Gasification Company. "Gasification". Retrieved 2012-06-20.

duke.edu

people.duke.edu

"China's synthetic natural gas revolution" (PDF). Archived from the original (PDF) on 2014-07-30. Retrieved 2014-08-06.

hceco.com

"Conversion of Coal to Substitute Natural Gas (SNG)" (PDF). Retrieved 2014-08-06.

web.archive.org

"China's synthetic natural gas revolution" (PDF). Archived from the original (PDF) on 2014-07-30. Retrieved 2014-08-06.