by Ernst Lerch $11.00
by M. Fauzil Adhim & M. Nazhif Masykur $6.00
by Akram Misbah Utsman $7.00
by Ahmad Abdul Ghaffar $6.00
by Drs. E. Sumaryono, MA $11.00
by Ir. Lisdiana Fachruddin $5.00