The ecological cleanliness of milk and products of its processing when using the sorption-probiotic supplement in the diet of cowsVasily E. Ulitko, Svetlana P. Lifanova, Lidia A. Pykhtina and Oksana E. ErisanovaBIO Web Conf., 27 (2020) 00006DOI: https://doi.org/10.1051/bioconf/20202700006