For citations:
Lashkova T.B., Petrova G.V., Zhukova M.Yu., Mityukov A.S. The role of fulvic acid in feeding heifers of reproductive age in the conditions of the Novgorod region. Bulletin of NSAU (Novosibirsk State Agrarian University). 2024;(3):205-212. (In Russ.) https://doi.org/10.31677/2072-6724-2024-72-3-205-212