Utkin Creek (Republic of Mari El)

Utkin Creek (Mary El) / Mamaeva, Ksenia Stanislavovna.- 2017. -605: Natural Environment of Russia Letter from the head Department of Environmental Safety, Environmental Management and Protection of the Republic of Mary El Karpova V.N.from 10/20/2017 № 5780-05..Electronic source: Department of Environmental Safety, Environmental Management and Protection of the Republic of Mari El