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1 · Religion and Magic
2 · Nature
3 · Human Being, Man in General
4 · Society, Civilization, Culture
5 · Abstract Ideas and Concepts
6 · History
7 · Bible
8 · Literature
9 · Classical Mythology and Ancient History
Top
4 · Society, Civilization, Culture
46 · social and economic life, transport and communication
46C · traffic and transport
46C2 · traffic on the water
46C28 · navigation and manoeuvering ~ ship
46C282 · position-finding at sea; nautical instruments
46C2823 · astrolabe
46C2823(+0) · astrolabe (+ variant)