by Agus S. Gunadi $7.00
by Ben Handaya $6.00
by Zulkifli Zakaria $5.00
by Mehdi Yazdi $11.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $6.00
by Yusuf al-Uqshari $7.00