MADUGU, A. Mapping Linkages between Actors in Cattle Marketing Innovation System of Northeastern Nigeria. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 22, n. 1, p. 17–27, 2022. DOI: 10.22630/PRS.2022.22.1.2. Disponível em: https://prs.sggw.edu.pl/article/view/3015. Acesso em: 30 wrz. 2022.