by Ir. Arifin Arief, M. P
$7.00

by Dr. Al. Purwa Hadiwardoyo, MSF.
$4.00

by N. Driyarkara, SJ (+)
$40.00

by Dr. C. Groenen, OFM.
$8.00

by L. Prasetya, Pr.
$4.00

by Ashari, Sumeru
$9.00