by Drs. O.P. Simorangkir
$9.00

by Setiyanto
$5.00

by A. P. Budiyono Hd.
$3.00

by Asghar A. Engineer
$6.00

by H. Salim HS. S.H., M.S.
$11.00

by Prof. DR. Soedjono Dirdjosisworo, SH. MBA
$7.00