Assessment of grain losses during harvesting of grain crops on the basis of technical and economic indicatorsIgor Khozyaev, Vyacheslav Ladyanov, Larisa Enalyeva, Maria Balinskaya and Viktor ZharovE3S Web Conf., 135 (2019) 01103DOI: https://doi.org/10.1051/e3sconf/201913501103