by Ir. Budi Samadi $6.00
by Dr. P. J. Suwarno, S.H $13.00
by Ir. Eddy Afrianto & Ir. Evi Liviawaty $6.00
by Ir. FX. Susanto $7.00
by Dra. Wiwi Isnaeni, M.S $11.00
by Sakti A. Siregar $6.00