by Drs. Marcel Go, M.S $7.00
by Ir. H. Nazarukhan Yasin $13.00
by ISEI $13.00
by Richard G. Lipsey & Peter O. Steiner $16.00
by Jopie Jusuf $11.00
by Joe Vitale $11.00
by Arief, Sritua $7.00