Rajfur P, Rajfur J, Hys K. The Analysis of Births and Household Poverty Levels with the Consideration of the Material Effect of the ‘Family 500 Plus’ Programme. PG [Internet]. 2021 May 13 [cited 2025 Aug. 30];51(1):18-29. Available from: https://www.publicgovernance.pl/zpub/article/view/577