by Dra. Sutratinah Tirtonegoro $7.00
by Drs. Daryanto $6.00
by Dr. Sofyan Syafri Harahap, M.S,Ac $11.00
by Trim Sutidja $5.00
by Erick Reidenbach $9.00
by Drs. Daryanto $11.00