TY - CPAPER AU - Sebastian Goraj TI - THE NATURAL ENVIRONMENT AS AN ELEMENT OF SUSTAINABLE DEVELOPMENT IN NORTH-EASTERN POLAND T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 14th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION PY - 2014 DO - 10.5593/sgem2014/b52/s20.099 PB - Stef92 Technology ER -