by Prof. J. Suprapto, M.A. APU $9.00
by Prof. Drs. S. Pamudji, M.P.A $9.00
by dr. Santoso Gunardi, MS, PAK $6.00
by Brooks $20.00
by Drs. R. Suharno $6.00
by Elisabeth Indah, P., S.Kp $5.00