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المؤلفون: Mira Leonidovna Ponomareva, Sergey Nikolaevich Ponomarev, Gulnaz Suleimanovna Mannapova, Liliya Firdavisovna Gilmullina, Lyubov Valentinovna Ilalova, Nazlygul Shamsutdinova Garaeva, Elza Ravilevna Gainutdinova
المصدر: The Agrarian Scientific Journal. :59-63