by A. Shallaby $9.00
by Ir. Setijo Pitojo $6.00
by Drs. G. Kartasapoetra $9.00
by Prof. DR. Taliziduhu Ndraha $9.00
by Made Astawan & Andreas Leomitro Kasih $12.00
by Hasan Basri Jumin $7.00