1 1 10 R ARRI WIDYANTO Primary Author ARIJANTO Primary Author M IMRON ROSYIDI Primary Author RIDAYATI Primary Author PURWATI Primary Author BASRI Primary Author PUJI SULISTIYANINGSIH Primary Author MUHAMMAD AL AMIN Primary Author MUSLIMAN Primary Author YAZID NASRULLAH Primary Author M JAFAR NASHIR Primary Author IMAM MAWARDI RZ Primary Author RISKIN HIDAYAT Primary Author mixed material 08539359 MAGELANG UNIVERSITAS MUHAMMADIYAH MAGELANG 2003