แกรนด์แคนยอน (Thai Wikipedia)

Analysis of information sources in references of the Wikipedia article "แกรนด์แคนยอน" in Thai language version.

refsWebsite

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doi.org

Karlstrom, Karl E.; Lee, John P.; Kelley, Shari A.; Crow, Ryan S.; และคณะ (2014). "Formation of the Grand Canyon 5 to 6 million years ago through integration of older palaeocanyons". Nature Geoscience. 7 (3): 239–244. Bibcode:2014NatGe...7..239K. doi:10.1038/ngeo2065.

harvard.edu

ui.adsabs.harvard.edu

Karlstrom, Karl E.; Lee, John P.; Kelley, Shari A.; Crow, Ryan S.; และคณะ (2014). "Formation of the Grand Canyon 5 to 6 million years ago through integration of older palaeocanyons". Nature Geoscience. 7 (3): 239–244. Bibcode:2014NatGe...7..239K. doi:10.1038/ngeo2065.