by Ir. Nur Tjahjadi $5.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Ir. Ibnu Dwi Buwono, M.Si $7.00
by $4.00
by Ir. Hieronymus Budi Santoso $5.00
by Otto Hentz, SJ. $4.00