by Leden Marpaung, S.H. $9.00
by M. Yahya Harahap, S.H. $12.00
by Drs. M. Djumhana, S.H. $6.00
by Wiwoho Soedjono, S.H $7.00
by Huala Adolf $9.00
by Prof. Dr. Soerjono Soekanto, S.H., M.A. $6.00