by Emanuel Gerrit Singgih, Ph.D. $7.00
by H. R. Kartadisastra $6.00
by Ir. Hieronymus Budi Santoso $6.00
by Edmund Woga, CSsR. $7.00
by Daniel Grippo $6.00
by Haryoto $5.00
by Richard & David A. Saphiro $7.00