by K. Usman $6.00
by James T. Siegel $7.00
by Bob Sugeng Hadiwinata, Ph. D $9.00
by Prof. Drs. S. Pamudji, M.P.A $9.00
by - $11.00
by Drs. Ibnu Syamsi, S.U $6.00
by Prof. Hazairin, S.H $7.00
by Jakob Oetama $7.00