by Aloys Budi Purnomo, Pr. $4.00
by Ir. H. Rahmat Rukmana $6.00
by Bambang Agus Murtidjo $5.00
by John Powell, SJ. $9.00
by Ir. Hatta Sunanta, B.Sc., MS $7.00
by Dr. Niels Mulder $11.00