Items where Author is "Siahaan, Mian"

Hendra, Muhammad and Purba, Saut and Siahaan, Mian (2017) Analysis of Academic Supervision Competence and Managerial Supervision in Improving the Performance of Vocational High School Supervisors in Langsa City. In: Proceedings of The 2nd Annual International Seminar on Transformative Education and Educational Leadership (AISTEEL 2017), October 16-17, 2017, Medan City, North Sumatera, Indonesia.