by Ir. M. Lies Suprapti $6.00
by Suharso, A.S.P $9.00
by Drs. Al. Soenarto S.W., dkk $4.00
by Drs. Theo Riyanto, M.A., FIC. & Drs. Heru Susanto $4.00
by J.P. Vaswani $7.00
by Ir. Daisy P. Sriyadi Hendaryono $6.00