ما قبل الكامبري (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "ما قبل الكامبري" in Arabic language version.

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almaany.com

archive.org

bbc.co.uk

doi.org

geosociety.org

google.es

books.google.es

gt-crust.ru

harvard.edu

ui.adsabs.harvard.edu

independent.co.uk

msu.edu

geo.msu.edu

nih.gov

pubmed.ncbi.nlm.nih.gov

nytimes.com

paulselden.net

purdue.edu

engineering.purdue.edu

reuters.com

stratigraphy.org

  • "International chronostratigraphic chart v2018/08" (PDF) (بالإنجليزية). {{استشهاد ويب}}: الوسيط غير المعروف |site= تم تجاهله يقترح استخدام |website= (help) and روابط خارجية في |site= (help).
  • Bleeker، W. (2004) [2004]. "Toward a "natural" Precambrian time scale". في Felix M. Gradstein؛ James G. Ogg؛ Alan G. Smith (المحررون). A Geologic Time Scale 2004. Cambridge University Press. ISBN:978-0-521-78673-7. also available at Stratigraphy.org: Precambrian subcommission

usgs.gov

pubs.usgs.gov

uwsp.edu

web.archive.org

wikidata.org

wiley.com

higheredbcs.wiley.com

wisc.edu

geoscience.wisc.edu

geology.wisc.edu