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| | Geografia d'Europa: material de suport (Site not responding. Last check: 2007-10-18) |
 | | From these data it was estimated that, in 1991, 187 tonnes (t) of copper, 314 t of lead, 1656 t of zinc, 276 t of nickel, 8.8 kilotonnes (kt) of nitrate nitrogen, 17.2 kt of total nitrogen and 1.5 kt of orthophosphate were discharged from these rivers. |
 | | In the spring of 1990 there was a massive death of starfish, crabs, mussels and marine mammals, which the Soviet Inter-governmental Commission attributed to sulphuric compounds (such as mustard gas) or the leakage of missile fuel from a submarine (Izrael and Tsyban, 1992). |
 | | The primary pollution source is river runoff, and the majority of pollutants originate from the enterprises of the lumber and woodworking industries, the former RSFSR State Agroindustrial Committee, the former USSR Ministry of the Medical and Microbiological Industries, and others. |
| www.ub.es /medame/marblanc.html (1144 words) |
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