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https://snob.ru/entry/176170/

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https://dialog.guide/stratieghii-tsienoobrazovaniia-kotliera/

https://dokumen.pub/9785961423464.html

https://www.researchgate.net/publication/375585209_Vyavlenie_predpoctenij_pokupatelej_k_pisevoj_produkcii_mestnyh_proizvoditelej_na_primere_goroda_Syktyvkara

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