Geist, Dennis A field trip guide to the geology of the Galápagos Islands / Dennis Geist, Bob Reynolds. - [Boulder, USA]: Geological Society of America, 1998. - 28 p. English Subjects--Topical Terms: GeologíaGeologyCiencias básicasPure science Subjects--Geographic Terms: Islas GalápagosGalapagos Islands Dewey Class. No.: 551.21