Encyclopædia Britannica: A New Survey of Universal Knowledge, Volume 10

20th century acid alleles ancient became British called carbon carbon dioxide centre changes chemical coal coast coil colour composition constitution contains crystal deposits duodenum early earth east electric elements England English field France French gametes garnets Gastropoda gears genes genotypes geochemical geodetic geography geoid geologic geometry geopolitics George Georgia German germanium gravity Greek hydrosphere igneous igneous rocks important industry influence king known lake land later lines lithosphere magnetic maps measured ment method minerals modern mountain natural observations organic origin Paris period physical physical geodesy plane plants political population produced Pulmonata pure strategies reference ellipsoid regions result river rocks Roman sedimentary sedimentary rocks sediments shell species structure surface temperature theory tion town United usually vertical voltage World War II