by A.M. Mangunhardjana, SJ $5.00
by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Shelly $26.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by WK $13.00
by Aloys Budi Purnomo, Pr. $3.00