by Prof. M. Nasroen $7.00
by Drs. G. Kartasapoetra, dkk $7.00
by Prof. DR. H. Abdul Muis Ba'dulu & Hermann, S.Ag., M.Pd $7.00
by Ir. Sumeru Ashari, M.A gr. Sc $7.00
by Bachrawi Sanusi $7.00
by Drs. Hartono $7.00