by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $12.00
by Bambang Agus Murtidjo $7.00
by $3.00
by Ir. H. Rahmat Rukmana $6.00
by Surip Stanislaus, OFMCap. $4.00
by Ir. Setijo Pitojo $6.00