Related by context. Frequent words. (Click for all words.) 53 Lake Ohrid 52 red sludge 50 Tisza 49 Hungary 49 toxic sludge 48 Danube Delta 47 Tulcea 47 Szolnok 47 Danube delta 47 Romania 46 sludge reservoir 46 Drina River 46 Danube River 46 Danube 46 Silistra 45 Amur River 45 Ceamurlia de Jos 45 Tibor Dobson 45 Baia Mare 44 mighty Danube 44 Szeged 44 Veszprem 44 Morava 43 Braila 43 Slatina 43 Otylia Jedrzejczak 43 Songhua river 43 Miskolc 43 Dnieper 43 Svishtov 43 Yankov 43 Evros 43 Rotenone 42 Wissahickon Creek 42 Wadden Sea 42 Laszlo Cseh 42 Carpathian mountains 42 toxic benzene 42 Dunkard Creek 42 dioxin contaminated 42 sludge 41 Sandor Pinter 41 Kardzhali 41 Vistula River 41 Songhua 41 Pazardzhik 41 Kazanlak 41 Esztergom 41 Toxic fumes 40 Vaslui 40 HUNGARY 40 Conemaugh River 40 Bryansk region 40 Pecs 40 Flutur 40 Sopron 40 Buzau 40 Karlovo 40 Targovishte 40 Sludge 40 Vidin 40 Volga river 40 Bulgaria 40 rivers 40 Songhua River 39 Three Gorges Reservoir 39 mediapool.bg 39 oily sludge 39 industrial effluents 39 Usti nad Labem 39 MAL Rt 39 cyanide 39 dioxin 39 Tokaj 39 Poyang Lake 39 Smederevo 39 Shkodra 38 river 38 Haskovo 38 tributary 38 BUCHAREST Reuters 38 Croatia 38 SOFIA bnn Bulgaria 38 tailing ponds 38 Manavgat 38 Torun 38 MAL Zrt 38 Kumanovo 38 polluting waterways 38 Albania 38 ROMANIA 38 Lovech 38 Marcal River 38 Nikopol 38 Jozsef 38 Neva River 38 Yingde 38 Sighisoara 38 Constanta 38 River tributary 37 toxic residues