by - $6.00
by Ir. L. Widarto $5.00
by Ir. Hieronymus Budi Santoso $5.00
by Prof. Dr. M. Mutawalli asy-Sya'rawi $5.00
by Ir. Heinz Frick & FX. Bambang Suskiyatno $6.00
by Drs. Zainal Abidin $9.00
by Dr. Emmanuel Subangun $4.00