by Drs. Daryanto $11.00
by Ir. Indriyanto $9.00
by John W. Osbome $7.00
by Prof. Dr. Ahmad Shalaby $12.00
by Mansur Samin $6.00
by Drs. C.S.T. Kansil, S.H $11.00
by A.M.W. Pranarka $7.00