by Drs. Agus M. Hardjana, M.Sc., Ed $6.00
by Ir. Hieronymus Budi Santoso $5.00
by $4.00
by Dr. K.H. Didin Hafidudin $12.00
by Dr. A. Rahman H. Abdullah $11.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $7.00