by Ir. Sujamto $7.00
by $13.00
by Prof. Dr. Umar Tirtarahardja dan Drs. La Sula $12.00
by Dr. M. arif Nasution, MA $6.00
by Ny. Susmayati, B.A dan Ny. Hj. Asnidar $7.00
by DR. M. Muslehuddin $7.00