by Budi Susanto, Dr, SJ (Editor) $11.00
by Wiranto Arismunandar $12.00
by Emanuel Barus $7.00
by WK $11.00
by WK $16.00
by Ulrich $16.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $6.00