by R. S. Stainton $7.00
by Muhammad Teguh $7.00
by Prof. Djafaruddin $7.00
by Glenn A. Welsch $13.00
by Ir. Rustam Hakim, M.T., IALI $9.00
by Drs. Ahmad Rohani., H.M., M.Pd $6.00
by Prof. Dr. H. Nursid Sumaatmadja $7.00