by Radiks Purba
$12.00

by Drs. Harry Waluya
$9.00

by Drs. Sudarsono, S.H., M.Si
$7.00

by Ir. Mul Muyani Sutedjo
$12.00

by Drs. H.M. Sudar Siandes, MM
$7.00

by Prof. Dr. Umar Tirtarahardja dan Drs. La Sula
$12.00