For citations:

Durov A.S., Deeva V.S. Assessment of selection groups of mature cows of various breeds, differentiated by milk fat. Bulletin of NSAU (Novosibirsk State Agrarian University). 2020;(4):73-81. (In Russ.) https://doi.org/10.31677/2072-6724-2020-57-4-73-81