“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”. 2021. Journal Pharmasci (Journal of Pharmacy and Science) 6 (1): 47-52. https://doi.org/10.53342/pharmasci.v6i1.206.