by N. Edy Soetanto, BE. $5.00
by Djoehana Setyamidjaja, M.Ed $6.00
by Dr. H. Pidyarto Gunawan, O.Carm $4.00
by Drs. D. Hendropuspito, O. C. $7.00
by drh. N. Tarigan, MSc $6.00
by Drs. Suwarna Pringgawidagda, M.Pd $18.00
by Ir. Hatta Sunanta, B.Sc., MS $7.00