00551naa#a2200157#i#450# EN\AUS PUBLISHERS\bibl\5669 20240508031928.3 20211128b2021####ek#y0engy0150####ca RU INFLUENCE OF THE AGE OF THE FIRST FRUITFUL INSEMINATION ON THE PRODUCTIVE LONGEVITY OF COWS Conference article/thesis Melbourne AUS PUBLISHERS 2021 2 с. Conference article/thesis local Fedoseeva Natalya Anatolyevna Kochetkova Marina Sergeevna auspublishers.com.au