Purbeckopus (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Purbeckopus" in Spanish language version.

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2^nd place

2^nd place

doi.org

dx.doi.org

Wright, J.L.; Unwin, D.M.; Lockleyl, M.G.; Rainforth, E.C. (enero de 1997). «Pterosaur tracks from the Purbeck Limestone Formation of Dorset, England». Proceedings of the Geologists' Association 108 (1): 39-48. doi:10.1016/S0016-7878(97)80004-1.