by $7.00
by M. Yahya Harahap, S. H. $18.00
by DM. Etter, Terj. Drs. Kusuma Wiraman $13.00
by Drs. Daryanto $7.00
by Drs. H. Abu Ahmadi $11.00
by Leden Marpaung, S.H. $12.00