by $4.00
by Darmawijaya, St, Pr $6.00
by Ir. Heinz Frick $7.00
by Afandhie Rosmarkam & Nasih Widya Yuwono $9.00
by Dra. Haula Rosdiana, M.Si $12.00
by Drs. G. Kartasapoetra $9.00