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founder:
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dreamhummie
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date created:
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10/27/2017
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no. of members:
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8
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description/mission statement:
Amsterdam Ordnance Datum or Normaal Amsterdams Peil (NAP) is a vertical datum in use in large parts of Western Europe. Originally created for use in the Netherlands, its height was used by Prussia in 1879 for defining Normalnull, and in 1955 by other European countries. In the 1990s, it was used as the reference level for the United European leveling Network (UELN) which in turn led to the European Vertical Reference System (EVRS).
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open enrollment: ON
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Category Status: The Normaal Amsterdams Peil (NAP) - Dutch NAP Level Markers category has been created (with variables).
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