by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Bambang Dwiloka & Rati Riana $9.00
by Thabrani $11.00
by Mastenbroek, W.F.G. $7.00
by Mohaini Mohamed $9.00
by Hasanuddin $9.00
by Marsana Windhu $3.00