by Leden Marpaung, S.H. $9.00
by Prof. Mr. Herman Sihombing $3.00
by Drs. Hari Sasangka, S.H., M.H. $8.00
by Prof. Drs. C.S.T. Kansil, S.H. $12.00
by - $6.00
by Prof. Mr. Dr. Sudargo Gautama $6.00