Nwaobiala, CU, Odoemelam LE. Constraints to Cocoa Farmers Participation in Farmer Field School (FFS) in Abia state, Nigeria. NJRED [Internet]. 2023 Apr. 12 [cited 2024 Jul. 3];7(1):29-34. Available from: https://journals.ui.edu.ng/index.php/njred/article/view/940