G1-922 Geography (General)
G65-69 Geographers
G70-70.6 Philosophy. Relation to other topics. Methodology
G80-99 History of geography
G100.5-108.5 Toponymy, Including gazetteers, geographic names and terms
G140 Great cities of the world
G141 Historical geography
G142 Aerial geography
G149-180 Travel. Voyages and travels (General)
G154.9-155.8 Travel and state. Tourism
G200-336 History of discoveries, explorations, and travel
G369-503 Special voyages and travels
G521-539 Adventures, shipwrecks, buried treasure, etc.
G540-550 Seafaring life, ocean travel, etc.
G575-890 Arctic and Antarctic regions
G905-910 Tropics (General)
G912-922 Northern and Southern Hemispheres
G1000-3122 Atlases
G1000-1000.5 Atlases of the moon, planets, etc.
G1001-1046 World atlases. Atlases of the Earth
G1050-1052 Northern and Southern Hemispheres
G1053 Tropics. Torrid Zone
G1054-1055 Polar regions. Frigid Zone
G1059-1061 Maritime atlases (General)
G1100-3102 By region or country
G3160-3171 Globes
G3180-9980 Maps
GA1-1776 Mathematical geography. Cartography
GB3-5030 Physical geography
GC1-1581 Oceanography