19th International Multidisciplinary Scientific Geoconference SGEM 2019, Ecology, Economics, Education and Legislation, Issue 5.2

1.0 3600 rich 19th International Multidisciplinary Scientific Geoconference SGEM 2019, Ecology, Economics, Education and Legislation, Issue 5.2 https://library.sk/arl-sav/en/detail-sav_un_epca-265212-19th-International-Multidisciplinary-Scientific-Geoconference-SGEM-2019-Ecology-Economics-Educati/