Colin Campbell (geologoa) (Basque Wikipedia)

Analysis of information sources in references of the Wikipedia article "Colin Campbell (geologoa)" in Basque language version.

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2web.archive.org

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1books.google.com

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1hubbertpeak.com

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argia.eus

«Colin Campbell hil da, ‘Peak Oil’ fenomenoa iragarri zuen geologoa» Argia (Noiz kontsultatua: 2022-11-21).

books.google.com

National Research Council, Long-range environmental outlook: proceedings of a workshop, 14–16 November 1979, p.20.

doe.gov

tonto.eia.doe.gov

Energy Information Administration – Official Energy Statistics from the U.S. Government.. .

hubbertpeak.com

C.J. Campbell, Evolution of oil assessments.^{[Betiko hautsitako esteka]}

troposdoc.com

«Troposdoc peak oil DVD documentary» www.troposdoc.com.

ukerc.ac.uk

Steven Sorrell and Jaimie Speirs, Global Oil Depletion, UK Energy Research Centre, Aug. 2009, p.86-87, 111-112.

web.archive.org