Chukwuemeka K, Anayo NI, Ogechi A. Multifactor Productivity of Smallholder Yam Farmers in Ebonyi State, Nigeria. agricsci [Internet]. 23. november 2020 [citirano 12. marec 2026];16(1-2):19-25. Dostopno na: https://journals.um.si/index.php/agricultura/article/view/985