Дридигер, В. ., Р. . Стукалов, and Р. . Гаджиумаров. “ECONOMIC EFFICIENCY OF CROP ROTATIONS WHEN CULTIVATING FIELD CROPS WITHOUT TILLAGE”. Agricultural Journal ISSN (Print): 2687-1246, ISSN (Online): 2687-1254, vol. 12, no. 4, May 2020, doi:10.25930/0372-3054/001.4.12.2019.