by Prof. Dr. Sondang P. Siagian, M.P.A $11.00
by - $7.00
by Darmadi Durianto, Sugiarto, Tony Sitinjak $7.00
by Bakhtiar, Numan Agus, Murisal $7.00
by Charles P. Kindleberger $11.00
by Drs. Daryanto $6.00
by Yuni Jie $30.00
by Mgr. Andre Leonard $6.00