by ISEI $18.00
by Drs. Sri Panudju Karso $6.00
by Huub J. W. M. Boelaars, OFM. Cap $20.00
by Jaelani, S.Si $7.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $5.00
by $4.00