Efektivitas Skabisida Ekstrak Daun Mimba (Azadirachta indica A. Juss) Terhadap Tungau Sarcoptes scabiei Secara In Vitro (In Vitro Test of Scabicide Effectiveness of Neem Leaves Extract (Azadirachta indica A. Juss) on Sarcoptes scabiei mite) - ahadian, fikri (Program Studi Peternakan Fakultas Pertanian USU Medan (Dept. of Animal Science, Faculty of, 2012)