SHAKYA, D. V. Estimation of Cohort Fertility Using Parity Progression Ratio. Curriculum Development Journal, [S. l.], n. 42, p. 18–28, 2020. DOI: 10.3126/cdj.v0i42.33209. Disponível em: https://www.nepjol.info/index.php/cdj/article/view/33209. Acesso em: 19 sep. 2021.