SYSTEMATIC APPROACHES TO THE ESTIMATION OF THE LOSSES (SHORTAGE) OF THE HARVEST OF AGRICULTURAL CROPS FROM THE NATURAL CALAMITIES AND OTHER UNFAVORABLE CONDITIONS OF PRODUCTION WITH THE INSURANCE OF SOWINGS ArticlePlushikov V.G., Krainev N.S., Dovletyarova E.A., Il'yasova N.I.RUDN Journal of Agronomy and Animal Industries. 2006. С. 4-9
