Items where Author is "Surahmadi, Surahmadi"
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Endro Tri, Susdarwono and Surahmadi, Surahmadi (2022) The effectiveness of promotional tools in making Covid-19 vaccination a success : hypothesis testing methods for changing cochran's version. Qistina: Jurnal Multidisiplin Indonesia, 1 (1): 5. pp. 22-30. ISSN 2964-6278