by Drs. Amin W. Tunggal Ak., M.B.A $22.00
by Drs. Hari Sasangka, SH. M.H. $8.00
by M. Yahya Harahap, S.H. $16.00
by - $11.00
by JP. Chaplin $16.00
by Wiwoho Soedjono, S.H $7.00