NANANG DWI WAHYONO, NISWATIN HASANAH and WAHYU WINARNO 2021. THE MODELING OF BEEF-CATTLE BREEDING ACTIVITY BASED ON LABOR USAGE, INCOME, AND EXPENSE OF BREEDER HOUSEHOLD. JournalNX - A Multidisciplinary Peer Reviewed Journal. 6, 06 (Feb. 2021), 318–322.