by ISEI $11.00
by Stanley Bing $11.00
by Prof. Ir. Zoer'ani Djamal Irwan, M.Sc $7.00
by Ratna Batara Munti $7.00
by Prof. Komaruddin $7.00
by Drs. O.P. Simorangkir $9.00
by H.R.A.C. Lawalata $9.00