by Prof. J. Suprapto, M.A. APU $9.00
by Ir. Respati $9.00
by Drs. J. Riwu Kaho $9.00
by Drs. O.P. Simorangkir $9.00
by DR. Andi Hamzah, S.H $7.00
by Drs. Sindu Galba $6.00