by R. Soegeng $16.00
by R. S. Stainton $7.00
by Drs. Djohermansyah Djohan $6.00
by Ir. Hieronymus Budi Santoso $5.00
by Ulrich $16.00
by Trim Sutidja $5.00
by Drs. Daryanto $7.00
by Donald J. Bawersok $12.00
by Drs. Surajiyo $7.00
by Aziz Alimul $7.00
by Aziz Alimul $9.00
by Arleen Amijaya $6.00