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Daulay, Fajar Efendi and , Zainuddin and , Darwin (2017) Analysis of Implementation of Vocational High School Supervision Policy in Tebing Tinggi. 2017 IJSRSET, 3 (6). pp. 961-969. ISSN Print ISSN: 2395-1990 / Online ISSN : 2394-4099
Nasution, Masyithoh Nur and , Darwin and Mulyana, Rachmat (2017) Principal Leadership Strategy in Improving the Quality of Teachers and Education Personnel in Senior State High School 1 BatangToru. IOSR Journal of Research & Method in Education (IOSR-JRME), 7 (5). pp. 87-99. ISSN e- ISSN: 2320–7388,p-ISSN: 2320–737X