bn:03375128n
Noun Concept
Categories: Geography terminology stubs, Surveying, Cartography stubs, Lines of longitude, Meridians and base lines of the United States
EN
principal meridian  Meridian  principal meridians
EN
A principal meridian is a meridian used for survey control in a large region. Wikipedia
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EN
A principal meridian is a meridian used for survey control in a large region. Wikipedia
Arbitrary meridians used as references in land surveying Wikipedia Disambiguation