by Y.I. Iswarahadi, SJ. $4.00
by J. Darminta, SJ $3.00
by Ir. Lisdiana Fachruddin $5.00
by Ir. Hatta Sunanta, B.Sc., MS $6.00
by Ir. Setijo Pitojo $6.00
by Ir. Budi Sulistyo $7.00