Wikimedi'Òc

Proceedings of the United States National Museum, Volume 76.djvu - Enomil

Bulletin of the Geological Society of America (IA bulletinofgeolo221911geol).pdf - Fæ

Bulletin of the Geological Society of America (IA bulletinofgeolo241913geol).pdf - Fæ

Bulletin - United States National Museum (IA bulletinunitedst9221915unit).pdf - Fæ

Proceedings of the United States National Museum (IA proceedingsofuni761930unit).pdf - Fæ

Bibliographic index of American Ordovician and Silurian fossils (IA bibliographicind02bassrich).pdf - Fæ