@inproceedings{sgem2015s11085,
  title = {ANALYSIS OF HYPSOMETRIC TINTS USED TO REPRESENT LANDFORMS ON POLISH MAPS ISSUED IN THE YEARS 1850-2004},
  author = {. Eng Urszula Majdak},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, INFORMATICS, GEOINFORMATICS AND REMOTE SENSING},
  year = {2015},
  pages = {681-688},
  publisher = {Stef92 Technology},
  doi = {10.5593/sgem2015/b22/s11.085}
}