by Adler, Hans A $6.00
by Ir. Mahendra Sultan Syah $12.00
by Drs. H.M. Sudar Siandes, MM $7.00
by Gilang Priyadi S $11.00
by Drs. H. Inu Kencana Syafiie $9.00
by Baum, Warren C & Stokes M. Tolbert $7.00