by Ashadi Siregar & I Made Suarjana $6.00
by Ir. M. Lies Suprapti $6.00
by H. Rahmat Rukmana $6.00
by Ir. Yudo Sudarto SP $5.00
by Ir. H. Rahmat Rukmana, MBA., MSc. $5.00
by Suharso, A.S.P $6.00
by H. Rahmat Rukmana $5.00