00542naa#a2200169#i#4500001001500000005001700015011001400032100004100046102000700087200008000094210003700174215001100211608002700222675007100249700003400320856001800354EN\\bibl\9576420250510181939.6##a2413-046X##a20250331b2025####ek#y0engy0150####ca##aRU1#aTRENDS IN DAIRY CATTLE DEVELOPMENT IN THE LENINGRAD REGIONeJournal article1#aMoscowcElectronic scienced2025##a13 с.##aJournal article2local##aМолочная промышленность в целом. 637.1#1aGolovnevgDmitriy Viktorovich4#ae-integral.ru