by Laura Khalida $7.00
by Anton Pasariboe $0.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $12.00
by Dr. Ibrahim Mulaakhathir $6.00
by Netty Hartati, dkk $7.00
by Ir. H. Rahmat Rukmana $6.00