by Leden Marpaung, S. H. $7.00
by - $6.00
by Erman Rajagukguk, S.H $6.00
by Prof. DR. Soedjono Dirdjosisworo, SH. MBA $7.00
by Hari Sabarno $12.00
by Prof. Drs. C.S.T. Kansil, S.H. $13.00