Sadiq M, Ahmad M, Gama E, Sambo A. Morbidity Cost and Willingness to Pay for Healthcare Insurance among Wheat Farmers in Jigawa State of Nigeria. PRS [Internet]. 7 marzec 2024 [cytowane 15 maj 2024];24(1):4-25. Dostępne na: https://prs.sggw.edu.pl/article/view/9711