by Haryoto $5.00
by Al. Purwa Hadiwardoyo, MSF. $3.00
by Windyatmoko B, MSF $8.00
by Ir. G. Djatmiko Sudarmo & Ir. S. J. Edy Purnomo $12.00
by Ir. H. Rahmat Rukmana $6.00
by Prof. Dr. Gerben Heitink & Fred. Heselaars Hartono, SJ. $8.00