by $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Ir. Fahmi Amhar & dr. Arum Harjanti $6.00
by Prof. Dr. Ir. Tri Yuwanta S.U., DEA $7.00
by Al. Wahjasudibja, Pr. $6.00
by Mark Link, SJ. $6.00