by Prof. Dr. Sondang P. Siagian, M.P.A $9.00
by Ir. Rustam Hakim, M.T., IALI & Dr. Ing. Ir. Eka SediadiR., IAI $9.00
by - $5.00
by Fazlur Rahman $7.00
by - $11.00
by Prof. Dr. H. Nursid Sumaatmadja $7.00