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Muthmainnah, Muthmainnah, Arabani, Fabriansyah Zakaria, Tazi, Imam, Chamidah, Ninik, Sasmitaninghidayah, Wiwis and Tirono, Mokhamad ORCID: https://orcid.org/0000-0001-8933-4725 (2023) Development of optical sensor technology for non-invasive hemoglobin measurement. Jurnal Penelitian Pendidikan IPA, 9 (11). pp. 10252-10258. ISSN 2407-795X