OBI-EGBEDI, Ogheneruemu; HUSSAYN, Jamiu; OLUWATAYO, Isaac. Trade Liberalization Policy and Competitiveness of Cocoa Beans Exports in Nigeria (1961-2017). Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 21, n. 1, p. 4–15, 2021. DOI: 10.22630/PRS.2021.21.1.1. Disponível em: https://prs.sggw.edu.pl/article/view/2422. Acesso em: 2 kwi. 2025.