by Al. Wahjasudibja, Pr. $3.00
by Ir. Dudung Abdul Muslim $9.00
by Ir. M. Lies Suprapti $5.00
by Ir. Suprio Guntoro $6.00
by Ir. Rahmat Rukmana $5.00
by Yeremias Bala Pito Duan, MSF. $4.00