by Dr. Paul Suparno, SJ. Dkk $6.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Ir. Juhaeni Radi $6.00
by $4.00
by Harry Abdul Jalal $6.00
by Dr. M. Dhiaudin Rais $9.00
by Prof. Mr. Dr. Sudargo Gautama $7.00