Wikimedi'Òc

Bulletin of the Geological Society of America (IA bulletinofgeol281917geol).pdf - Fæ

Bulletin of the Geological Society of America (IA bulletinofgeolo331922geol).pdf - Fæ

The Journal of geology (IA journalofgeology161908univ).pdf - Fæ

The Proceedings of the Iowa Academy of Science (IA proceedingsofio131906iowa).pdf - Fæ

Geology of petroleum (IA geologyofpetrole00emmorich).pdf - Fæ

The environment of vertebrate life in the late Paleozoic in North America, a paleographic study (IA cu31924004107177).pdf - Fæ