From the Wikipedia page [1]

Pervomaysky District (Russian: Первома́йский райо́н) is an administrative and municipal district (raion), one of the seventeen in Yaroslavl Oblast, Russia. It is located in the north of the oblast. The area of the district is 2,270 square kilometers (880 sq mi). Its administrative center is the urban locality (a work settlement) of Prechistoye.

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