Retired Dr. Betty Zelda Siahaan, M.M
Sunday, October 22 2017, at Cibubur, the Physics and Physics Education Study Program, FMIPA, Jakarta State University, released one of the senior lecturers who had retired, Dr. Betty Zelda Siahaan, M.M.
Sunday, October 22 2017, at Cibubur, the Physics and Physics Education Study Program, FMIPA, Jakarta State University, released one of the senior lecturers who had retired, Dr. Betty Zelda Siahaan, M.M.