by Ir. H. Rahmat Rukmana $6.00
by Ir. Laode M. Aslan $7.00
by Prof. M. Nasroen $7.00
by H. Rahmat Rukmana $6.00
by Allan B. Muntjoy $9.00
by Parakkasi, Aminuddin $13.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by G. Kartasapoetra dan Dra. Hartini $13.00
by Tardjono Abu M. Muaz $7.00
by $7.00
by Dav Pilkey $5.00