Cofnodi Dyfyniadau
Dyfyniad APA
Schermerhorn L. J. G., Zbyszewski Georges, Ferreira O. da Veiga, Oliveira José Tomás, & Portugal Serviços Geológicos de Portugal. (1987). Carta geológica de Portugal na escala de 1: 50 000. S.G.P.
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Dyfyniad Arddull Chicago
Schermerhorn L. J. G., Zbyszewski Georges, Ferreira O. da Veiga, Oliveira José Tomás, and Portugal Serviços Geológicos de Portugal. Carta Geológica De Portugal Na Escala De 1: 50 000. S.G.P, 1987.
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Dyfyniad MLA
Schermerhorn L. J. G., et al. Carta Geológica De Portugal Na Escala De 1: 50 000. S.G.P, 1987.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.