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Message * Problemy Sokhranenii︠a︡ Bioraznoobrazii︠a︡ Aridnykh Regionov Rossii Materialy Mezhdunarodnoĭ Nauchno-Prakticheskoĭ Konferent︠s︡ii, G. Volgograd, 11-17 Senti︠a︡bri︠a︡ 1998 G. - 5855341747 - 9785855341744