by Ir. Heinz Frick & Pujo L. Setiawan $7.00
by Ir. H. Rahmat Rukmana - Hj. Yuyun Yuniarsih, BSc. $6.00
by Ben Handaya $5.00
by Ir. Ari Wijayani Purwanto $11.00
by Dr. C. Groenen, OFM. $12.00
by Komisi Komkat KWI $4.00