by Drs. CST. Kansil, S.H $12.00
by Dra. Sri Sundari HS., M.Pd $6.00
by Maurice Duverger $7.00
by Radiks Purba $13.00
by - $11.00
by Ir. Mul Muyani Sutedjo $7.00
by Irawan Soejito $9.00