by Ir. Abbas Siregar Djarijah $6.00
by Ir. H. Djoko Tribawono, M.Si. $6.00
by Ken Terate $7.00
by Miranda Lee $7.00
by Dr. Ir. Muhammad Rasyaf, MS $7.00
by WK $12.00
by Leden Marpaung, S.H. $7.00
by Penyunting: Indra J. Piliang, Edy Prasetyo, Hadi Soesastro $0.00