by Dr. Ir. Muhammad Rasyaf, MS
$9.00

by Made Astawan & Andreas Leomitro Kasih
$12.00

by L. Prasetya, Pr.
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by Kemas Ali Hanafiah
$9.00

by Ir. H. Rahmat Rukmana, MBA., MSc.
$5.00

by Thomas A. N. S
$6.00