@article{Il'ina2018in,
author={Il'ina, T.A. and Il'in, A.N. and Vasil'ev, O.A.},
title={IN THE GRAY FOREST SOIL OF CHUVASHIYA},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2018},
pages={8-11},
volume={12},
issue={4},
}