by J. Donald Walters $5.00
by Prof. I. R. Poedjawijatna $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Retno Iswarin Pujaningsih $0.00
by Abd Ahmed An-Naim, dkk $11.00
by Ir. Abbas Siregar Djarijah $5.00