by Trim Sutidja $6.00
by Drs. Paulus Hariyono, M.T $9.00
by Dr. William Hendricks $6.00
by Donald J. Bawersok $12.00
by Edgar Morin $6.00
by Drs. Ec. Alex. S. Nitisemito dan Drs. M. Umar Burham. M.S $6.00