by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Thabrani $11.00
by Dr. Paul Suparno, SJ. $6.00
by Ir. Juhaeni Radi $5.00
by drh. Soeharsono $9.00
by Djoehana Setyamidjaja, M.Ed $7.00