2 1 10 Pantow, Johanna B. S. Additional Author Haryanto, Yan Additional Author Darminah Additional Author Riyanti, Rahayu Dwi Primary Author Isman, Suci M. Additional Author Tampubolon, Sorta P. Additional Author mixed material Jakarta Universitas Terbuka 1999 f772.jpeg.jpeg Zuhairi, Aminuddin Primary Author Darminah Additional Author Riyanti, Rahayu Dwi Additional Author mixed material Jakarta Universitas Terbuka 1999 f460.jpeg.jpeg