by Sei H. Dt. Tombak Alam
$5.00

by Prof. Dr. S. Nasution, M.A.
$7.00

by Drs. Ahsin W. Al-Hafidz
$6.00

by Dr. R. Paryana Suryadipura
$11.00

by Drs. Daryanto
$6.00

by Prof. Drs. Piet A. Sahertian
$7.00