TY - JOUR A1 - Wu, C. A1 - Liu, J. A1 - Liu, J. A1 - Li, Z. T1 - Research on National 1:50000 Topographic Cartography Data Organization JO - ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. J1 - ISPRS-Annals VL - II-4 SP - 83 EP - 89 Y1 - 2014/04/23 PB - Copernicus Publications SN - 2194-9050 UR - https://isprs-annals.copernicus.org/articles/II-4/83/2014/ L1 - https://isprs-annals.copernicus.org/articles/II-4/83/2014/isprsannals-II-4-83-2014.pdf DO - 10.5194/isprsannals-II-4-83-2014 ER -