நிலத்தடி நிலக்கரி வளிமமாக்கல் (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "நிலத்தடி நிலக்கரி வளிமமாக்கல்" in Tamil language version.

refsWebsite

Global rank Tamil rank

1web.archive.org

1^st place

1^st place

1worldenergy.org

low place

low place

850^th place

236^th place

1books.google.com

3^rd place

6^th place

books.google.com (Global: 3^rd place; Tamil: 6^th place)

National Research Council (U.S.). Committee on Ground-Water Resources in Relation to Coal Mining (1981). Coal mining and ground-water resources in the United States: a report. United States National Academies. p. 113.

purdue.edu (Global: 850^th place; Tamil: 236^th place)

Burton, Elizabeth; Friedmann, Julio; Upadhye, Ravi (2007) (PDF). Best Practices in Underground Coal Gasification. Technical Report. Lawrence Livermore National Laboratory. W-7405-Eng-48. http://www.purdue.edu/discoverypark/energy/pdfs/cctr/BestPracticesinUCG-draft.pdf. பார்த்த நாள்: 2010-07-31.

web.archive.org (Global: 1^st place; Tamil: 1^st place)

Copley, Christine (2007). "Coal". In Clarke, A. W.; Trinnaman, J. A. (eds.). Survey of energy resources (PDF) (21 ed.). World Energy Council. p. 7. ISBN 0946121265. Archived from the original (PDF) on 2011-04-09. Retrieved 2011-08-09.

worldenergy.org (Global: low place; Tamil: low place)

Copley, Christine (2007). "Coal". In Clarke, A. W.; Trinnaman, J. A. (eds.). Survey of energy resources (PDF) (21 ed.). World Energy Council. p. 7. ISBN 0946121265. Archived from the original (PDF) on 2011-04-09. Retrieved 2011-08-09.