Là m?t v??ng qu?c ??c l?p trong nhi?u th? k?, Bulgaria ?ã là m?t c??ng qu?c l?n trong th?i gian dài th?i Trung c?.???????? ???????????? ?????? ? ???? ?? ???????? - ????????????, ??????????? ?????? ?? ????, ???? ? ???? - ????????? ?? ??????? ???????air pollution from industrial emissions; rivers polluted from raw sewage, heavy metals, detergents… Read More