character: Eratosthenes
topic: Early Cartography and Latitude/Longitude System
grade: 10
subject: Geography
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character: Hipparchus
topic: Influence on Latitude/Longitude Measurements
grade: 10
subject: Geography
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character: Ptolemy
topic: Geographical Works and Maps
grade: 10
subject: Geography
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character: Ferdinand Magellan
topic: Navigation and Use of Latitude/Longitude
grade: 10
subject: Geography
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