by Drs. H. Najamuddin $6.00
by - $5.00
by Prof. DR. Soedjono Dirdjosisworo, SH. MBA $8.00
by H.M. Idris Ramulyo, S.H., M.A. $9.00
by Drs. G. Kartasapoetra $9.00
by Prof. Dr. Suharsimi Arikunto $6.00