by Ir. H. Rahmat Rukmana $6.00
by Dr. C. Groenen, OFM. $7.00
by Bambang Agus Murtidjo $6.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by H. Ahmadi Isa $6.00
by E. Martasudjita, Pr. $3.00