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Number 52561 Ukraine. Scientific work “Environmental passport tourist area (object)”, K.D. Nikolaev, K.O. Babikova, V.M. Isayenko, G.A. Bilyavskaya, Appl. 10/15/13; publ. 12.13.13 (research and processing of results, writing and presentation materials).

Number 52 563 Ukraine. Scientific work “Environmental Passport rural (agricultural) estate and residential area”, K.O. Babikova, K.D. Nikolaev, V. Isaenko, Appl. 10/15/13; publ. 12.13.13 (research and processing of results, writing and presentation materials).