by Drs. Solichin Abdul Wahab, M.A $7.00
by Prof. Dr. S. Nasution, M.A. $9.00
by Dr. Khalid Abu Syadi $5.00
by Eng Antonio Augusta Borelli Machado $3.00
by Prof. Komaruddin $11.00
by Drs. Wasty Soemanto, M.Pd $6.00