by Prof. drh. Charles Rangga Tabbu, M.Sc., Ph.D $18.00
by Ir. M. Lies Suprapti $6.00
by Mary Rebecca 'Rivkha' E. Rogacion R. G. S $7.00
by Drs. Radno Harsanto, M.Si $9.00
by John Kirvan $6.00
by Drs. Agus Suroso $0.00