Svetlakova
Olesya Alexeyevna,
post graduate, Izhevsk state agricultural Academy,
e-mail: olesiasvet@mail.ru

The state of forest litter in spruce stands of the Udmurt Republic
Bukharina I., Svetlakova O., Konopkova A., Lednyova O., Absalyamov R.
         2019,    N 3