by Dr. Hery Winarsi, M.S
$11.00

by Ir. Mul Muyani Sutedjo
$6.00

by Muhammad Chirzin
$5.00

by Ir. H. Rahmat Rukmana & Yuyun Y
$6.00

by O'Keefe, Susan Heyboer
$6.00

by Ir. Budi Samadi & Ir. Bambang Cahyono
$7.00