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Message * Biosferosovmestimye i Sredozashchitnye Tekhnologii Pri Vzaimodeǐstvii Cheloveka S Okryzhau︠i︡shcheǐ Sredoǐ Sbornik Materialov Vii Mezhdunarodnoǐ Nauchno-Prakticheskoǐ Konferent︠s︡ii, Okti︠a︡brʹ 2002 G. - 5943380388 - 9785943380389