by Ir. Bambang Cahyono $7.00
by Ir. H. Rahmat Rukmana $5.00
by FX. Wibowo Ardhi $3.00
by Ir. Setijo Pitojo $6.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $5.00
by Al. Wahjasudibja, Pr. $12.00