Khair, A. (2018) “Economic benefit in repeat breeder cows using intrauterine infusion of penicillin and estrus synchronization followed by timed artificial insemination”, Journal of Advanced Veterinary and Animal Research, 5(4), pp. 454–458. Available at: https://banglajol.info/index.php/JAVAR/article/view/39511 (Accessed: 17 April 2025).