by DR. A. Saleh Abdullah $9.00
by Prof. Sarbini Sumawinata $11.00
by Drs. H. Abu Ahmadi $11.00
by Denny J. A $6.00
by Drs. H. Burhanuddin Salam, M.M $7.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $7.00