by Prof. Dr. S. Nasution, M.A. $7.00
by - $11.00
by - $6.00
by Prof. Drs. Pamudji, M.P.A $11.00
by Prof. Drs. S. Pamudji, M.P.A $9.00
by G. Kartasapoetra dan R. G. Kartasapoetra, S.H $6.00