by Ir. Pracaya $6.00
by Dr. Tom Jacobs, SJ. $8.00
by Memed Humaedillah $5.00
by Ir. Abbas Siregar Djarijah $5.00
by Ir. Hieronymus Budi Santoso $5.00
by H. Djufri M. Mangkuto, S.E $6.00