by Suhrawardi K. Lubis, S. H. $11.00
by Drs. Sisdjiatmo Kusumosuwidho, M.Sc $9.00
by Prof. Abdulkadir Muhammad, S.H. $5.00
by - $6.00
by Prof. Dr. Mariam Darus Badrulzaman, S.H. $6.00
by Prof. DR. Sukardjo $7.00