by Prof. H.M. Arifin, M.Ed $7.00
by H. Sahilun A. Nashir $5.00
by Sei H. Dt. Tombak Alam $13.00
by Prof. Drs. Anas Sudijono $11.00
by Kasmir, S.E., M.M $11.00
by Drs. A.F. Jaelani $6.00