by Al. Wahjasudibja, Pr. $12.00
by Drs. Wishnubroto Widarso $5.00
by Hani Hendayani dan Amatullah Shafiyyah $6.00
by Dr. Muhammad bin Andurrahman al-Khumayyis $5.00
by Ir. Arifin Arief, M. P $5.00
by Djoehana Setyamidjaja, M.Ed $6.00