@article{Chasovshchikova2012service-period,
author={Chasovshchikova, M.A.},
title={SERVICE-PERIOD INFLUENCE ON BLACK-MARKED BREED COWS MILK PRODUCTIVITY},
journal={Bulletin of KSAU},
publisher={Krasnoyarsk State Agrarian University},
year={2012},
pages={136-138},
volume={},
issue={10},
}