by Ir. Hatta Sunanta, B.Sc., MS $7.00
by Drs. Sudarsono, S.H., M.Si $7.00
by Prof. Dr. H. Abdurrahmat Fathoni, M.Si $6.00
by Prof. Mr. Roeslan Saleh $6.00
by $26.00
by Prof. Dr. Soegyarto Mangkuatmodjo $13.00