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Widayani, Heni ORCID: https://orcid.org/0000-0002-6966-6754, Nuraini, Nuning ORCID: https://orcid.org/0000-0002-4401-8304 and Triska, Anita (2020) Pyramid population prediction using age structure model. CAUCHY, 6 (2). p. 66. ISSN 2086-0382