by A.M. Mangunhardjana, SJ
$6.00

by Ir. Eddy Afrianto & Ir. Evi Liviawaty
$6.00

by Drs. AS. Sudarmono
$11.00

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

by H. Rahmat Rukmana & Indra Mukti Harahap
$5.00

by Wolfgang Bock, SJ.
$6.00