by Ir. Budi Samadi & Ir. Bambang Cahyono $7.00
by Kuswandi $6.00
by H. Rahmat Rukmana $6.00
by Thomas A. N. S $6.00
by Ir. M. Lies Suprapti $5.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $5.00