TY - CPAPER AU - Adam Lyszkowicz TI - UNIFICATION OF POLISH LOCAL VERTICAL DATUM WITH GLOBAL VERTICAL DATUM T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 15th International Multidisciplinary Scientific GeoConference SGEM2015, INFORMATICS, GEOINFORMATICS AND REMOTE SENSING PY - 2015 DO - 10.5593/sgem2015/b22/s9.075 PB - Stef92 Technology ER -