by N. Wahyu Sulistiyana $6.00
by Ir. Hieronymus Budi Santoso $6.00
by Aloys Budi Purnomo, Pr. $4.00
by Afandhie Rosmarkam & Nasih Widya Yuwono $9.00
by H.A. Aziz Salim Basyarahil $6.00
by M. Ali Hasan $5.00