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Hardyanti, ining, Harahap, J. and Laila, A. 2020. THE RELATIONSHIP OF PREGNANCY EXERCISE TO PERINEAL RUPTURE AMONG PRIMIPAROUS WOMEN AT PMB DINCE SAFRINA OF PEKANBARU IN 2015 -2018. JURNAL IBU DAN ANAK. 8, 1 (Jun. 2020), 8-15. DOI:https://doi.org/10.36929/jia.v8i1.285.