by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Helimut Haug & Jurgen Rump $7.00
by Ir. Dudung Abdul Muslim $6.00
by Majdi Fathi Sayyid $6.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00
by $4.00
by Rachmat Subagya $6.00