by Ernst Lerch $11.00
by Ir. F.X. Susanto Tumpal HS. Siregar $5.00
by Dr. Martin Harun, OFM $6.00
by Ir. Bambang Cahyono $7.00
by Drh. Nabari Tarigan, MSc $6.00
by Catherine de H. Doherty $6.00