Wikimedi'Òc

The American journal of science (IA americanjourna521921newh).pdf - Fæ

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

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

Bulletin of the Geological Society of America (IA bulletinofgeolo311920geol).pdf - Fæ

Bulletin of the Geological Society of America (IA bulletinofgeolog19190geol).pdf - Fæ

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

The Wilson bulletin (IA wilsonbulletin5019wils).pdf - Fæ

The slates of Arkansas (IA slatesofarkansas00arka).pdf - Fæ

Minerals in Arkansas, including a review of oil and gas conditions (IA mineralsinarkans00arkarich).pdf - Fæ

Outlines of the geology, soils and minerals of the state of Arkansas (IA outlinesofgeolog00arkarich).pdf - Fæ

Index to the stratigraphy of North America (IA cu31924004597872).pdf - Fæ