| http://www.w3.org/ns/prov#value | - 15' 28 N. For longitude, the capital letters E and W are used for east and west, such as 110??? 35' 51 W. Sometimes, in order to enter pure numbers into a database, latitude and longitude are expressed as positive numbers for N and E and negative numbers for S and W. Two types of scales are shown on US Geological Survey topographic maps: (1) a precise representational fractional scale expressed
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