by Kian Wie, Thee $6.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00
by N. Edy Soetanto, BE. $5.00
by Aji Supriyanto $16.00
by Sanusi, Bachrawi $5.00
by Nursalam $13.00