by Lanny Soechan $6.00
by CAL OREY $7.00
by P. Franciscus, OSCO. $3.00
by Hadi Soesastro, J. Kristiadi, Arief Priyadi $20.00
by Ir. Bambang Cahyono $6.00
by Ir. Hieronymus Budi Santoso $5.00