by Ir. Heinz Frick $5.00
by Dr. Al. Purwa Hadiwardoyo, MSF. $4.00
by Ir. Setijo Pitojo $6.00
by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Al. Wahjasudibja, Pr. $12.00
by Deshi Ramadhani, SJ $9.00