Qo‘chqorov , Abdukarim Nuriddinovich, Sharofuddin Polvonovich Elmurotov, and Asqar Ma’rifjonovich Xoljigitov. 2023. “SIMMENTAL ZOTINING GO‘SHT MAHSULDORLIGI”. GOLDEN BRAIN 1 (16):4-8. https://researchedu.org/index.php/goldenbrain/article/view/3697.