by Ir. FX. Susanto
$7.00

by Suharso, A.S.P
$6.00

by Ir. L. Widarto
$5.00

by Prof. Dr. Abdul Munir Mulkhan
$12.00

by Ir. H. Rahmat Rukmana & Hj. Yuyun Yuniarsih, SP., MBA., MM.
$6.00

by Ernest & Sri Mariyanto
$4.00