by M. Fauzil Adhim & M. Nazhif Masykur $6.00
by Eng Antonio Augusta Borelli Machado $3.00
by Ir. Hieronymus Budi Santoso $5.00
by Dr. Al-Amien Ahmad $5.00
by Drs. D. Hendropuspito, O. C. $7.00
by Drs. Wishnubroto Widarso $5.00