by E. Martasudjita, Pr. $3.00
by Ir. Hieronymus Budi Santoso $5.00
by Dr. Martin Harun, OFM / LBI $7.00
by John Lechte $12.00
by Al. Purwa Hadiwardoyo, MSF. $3.00
by Ir. Ari Wijayani Purwanto $9.00