This is the 9442nd most frequent Russian word.
тюменского
"Тюменского" means "of Tyumen" (possessive form related to the city or region of Tyumen in Russia).
Here, 'тюменского' is used as an adjective describing 'студента' (student) indicating origin or association with Tyumen.
Тюменского студента наградили за его исследовательскую работу.
A student from Tyumen was awarded for his research work.
'Тюменского' functions as an adjective related to 'издательства' (publishing house), showing the book's connection to Tyumen.
В местной библиотеке я нашел редкую книгу тюменского издательства.
In the local library, I found a rare book from a Tyumen publishing house.
In this context, 'тюменского' describes 'края' (region), specifying the geographic area related to Tyumen.