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Langitan, Yesita Sandi and Wauran, Maria Paulina and Sitinjak, Sondang Lusiana and Hutapea, Lyna M.N. (2023) THE MEASUREMENT OF PROPER HANDWASH KNOWLEDGE ON ELEMENTARY AND HIGHSCHOOL STUDENTS. Jurnal Cakrawala Ilmiah, 2 (6). pp. 2367-2372. ISSN 2808-1668