by Suryohadiprojo, Sayidiman $7.00
by Drs. A. Hasymi Ali $11.00
by Prof. Drs. Piet A. Sahertian $7.00
by - $13.00
by Dr. Paul Suparno, SJ. Dkk $6.00
by Prof. Dr. Sondang P. Siagian, M.P.A $11.00