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Syaiful RIzal and Budi Utomo and Suherni Susilowati and Sri Mulyati and Ismudiono and Soeharsono and Suzanita Utama (2020) Interkorelasi antara Persentase Konsentrat, Kadar Urea Nitrogen Susu dan Beberapa Variabel Sapi Perah Friesian Holstein. Ovozoa, 9 (2). pp. 53-59. ISSN 2302-6464, e-ISSN 2722-967X