Wikimedi'Òc

The annals and magazine of natural history - zoology, botany, and geology (IA s7annalsmagazine16londuoft).pdf - Fæ

Smithsonian miscellaneous collections (IA smithsonianmisce931935smit).pdf - Fæ

Smithsonian miscellaneous collections (IA smithsonianmisce93smit).pdf - Fæ

Bulletin of the Geological Society of America (IA bulletinofgeo13190102geol).pdf - Fæ

Bulletin of the Geological Society of America (IA bulletinofgeol9189798geol).pdf - Fæ

Bibliographic review and index of papers relating to underground waters published by the United States Geological survey, 1879-1904 (IA bibliographicrev00fullrich).pdf - Fæ

Guidebook of the western United States (IA guidebookofweste02geol).pdf - Fæ

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