“Study of Tetracycline HCl Residue in Broiler Chicken Meat and Liver at Several Farms in Lamongan District Using Ultraviolet Spectrophotometry Method: Kajian Residu Tetrasiklin HCl Dalam Daging Dan Hati Ayam Broiler Pada Beberapa Peternakan Di Kabupaten Lamongan Menggunakan Metode Spektrofotometri Ultraviolet”. Journal Pharmasci (Journal of Pharmacy and Science) 6, no. 1 (January 21, 2021): 47–52. Accessed November 2, 2026. http://ejournal.akfarsurabaya.ac.id/index.php/jps/article/view/206.