Williams, F. X. Entomological notes of the Galapagos Is. Expedition, 1905-6 (California Academy of Sciences) / by F. X. Williams. - [Estados Unidos] : [s.d.], [ca1906]. - s.p. Inglés Subjects--Topical Terms: EntomologíaEntomologyInsectosInsectsCiencias básicasPure sciences Subjects--Geographic Terms: Islas GalápagosGalapagos Islands Dewey Class. No.: 595.7