Profitability of Pig Farm Enterprises under Intensive System for Economic Recovery among Farmers in Enugu State, Nigeria. Journal of Pharmaceutical Negative Results, [S. l.], p. 1934–1945, 2022. DOI: 10.47750/pnr.2023.14.S02.232. Disponível em: https://pnrjournal.com/index.php/home/article/view/7773.. Acesso em: 7 jun. 2026.