by Indriyanto $0.00
by Djoehana Setyamidjaja, M.Ed $7.00
by Ir. Hieronymus Budi Santoso $5.00
by Alan B. Mountjoy $9.00
by Dr. B. Siswanto Sastrohadiwiryo $9.00
by H. Rahmat Rukmana $5.00