by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $5.00
by Don WS, Cherry Hadibroto $7.00
by $11.00
by Dr. Ali Masrur $9.00
by H. Rahmat Rukmana $6.00
by Darmono $6.00
by Drs. Agus M. Hardjana, M.Sc., Ed $3.00
by Dr. Muhammad Na'im Yasin $5.00
by Dr. Ibrahim Khalil Ahmad $6.00