Items where Author is "Siahaan, Mian"

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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.

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