by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Ir. Nur Tjahjadi $5.00
by B.B. Triatmoko, SJ $6.00
by T. Sarpian $7.00
by $3.00
by Ir. Hieronymus Budi Santoso $5.00
by Ch. Lilies Sutarminingsih $7.00