by Ir. Mul Muyani Sutedjo $7.00
by Masnur Muslich $9.00
by Drs. G. Kartasapoetra $9.00
by Drs. G. Kartasapoetra $7.00
by Drs. Abdul Chaer $11.00
by Dr. Moh. Efendi, M.Pd., M.Kes $7.00