by Prof. Ir. Amris Makmur $6.00
by Drs. K.H. Abdul Rahman $9.00
by Ir. Susy Fatena Roestiyanti, M.Sc $7.00
by Imam Tholkhah $9.00
by Drs. H. Fuad Ihsan $9.00
by Drs. H. Abu Ahmadi $9.00
by Drs. I Made Putrawan $7.00