by Haryoto
$5.00

by Ir. St. Eka Adiwibawa
$9.00

by Enceng Surachman & Widodo Agus S.
$6.00

by Dr. Paul Suparno, SJ. Dkk
$6.00

by B.B. Triatmoko, SJ
$6.00

by Prof. Dr. Ir. Tri Yuwanta S.U., DEA
$7.00