TY - CPAPER AU - Marjan Delipetrev TI - TIME VARIATION OF THE GEOMAGNETIC FIELD ON THE TERRITORY OF THE REPUBLIC OF MACEDONIA IN THE LAST 50 YEARS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING PY - 2013 DO - 10.5593/sgem2013/ba1.v2/s05.033 PB - Stef92 Technology ER -