@article{Muratov2014balance,
author={Muratov, M.. and Gilyazov, M..},
title={Balance of nitrogen in the agriculture  of baltasi municipal region of the republic of Tatarstan},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2014},
pages={117-123},
volume={8},
issue={4},
}