Գ.Հ. Գիլոյան, Ա.Հ. Գրիգորյան, Ն.Ա. Կասումյան 2023. Age-Related Characteristics of Milk Productivity in the Second Generation Bred from the Daughters of Imported Purebred Holstein Heifers. AgriScience and Technology. 2, 66 (Aug. 2023).