by Dr. Hery Winarsi, M.S $11.00
by Ir. Budi Samadi $0.00
by RODERICK GORDON & BRIAN WILLIAMS $17.00
by AL. Andang Listya Binawan, SJ (Penyunting) $6.00
by Cyril Glasee $24.00
by RICHARD SCHOCH $6.00