31299863geographic conceptsPT2026-03-30 20:20:30UF31299864concepts, geographicNDUF31299865geographic conceptNDBT31297683physical sciences conceptsPTNT31300365street addressesPTNT31308520triangulation stationsPTNT31308523astronomical stationsPTNT31308528latitudePTNT31308529longitudePTNT31308530coordinatesPTNT31308533place typesPT