by J. Donald Walters $3.00
by Dr. P. Hardono Hadi $7.00
by Santo Alfonsus Liguori $5.00
by M. Ali Hasan $6.00
by Ir. Sudadi Martodireso & Ir. Widada Agus Suryanto, MM $5.00
by Ir. Sutaman $6.00