00749naa#a2200193#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200016100102210004900263215001000312608002700322675012700349700003500476700003000511856001400541EN\\bibl\1563920241226171119.4##a2073-0462##a20170601b2017####ek#y0engy0150####ca0#aRUS##aRU1#aPRODUCTIVE LONGEVITY OF COWS OF BLACK-MOTLEY BREED, DEPENDING ON THE FIRST INSEMINATION AGE AND LEVEL OF MILK YIELD FOR THE FIRST LACTATIONeJournal article1#aKazancKazan state agrarian Universityd2017##a4 с.##aJournal article2local##aСельское хозяйство. Лесное хозяйство. Охота. Рыбное хозяйство. 63zRUS#1aRudishinagNatal'ya Mihaylovna#1aShtyrevagIrina Vadimovna4#azh-szf.ru