by Drs. Slameto $7.00
by Drs. Agus Sujanto $9.00
by Prof. Abdur Rahman I Do'I, Ph.D $7.00
by Ir. Respati $7.00
by Djoko Prakoso, S.H $12.00
by A. Tresna Sastrawijaya, M.Sc $7.00
by Dra. Ahmad Rohani H.M., M.Pd $9.00