Negese, Itisa, and Aman Rikitu. 2024. “Analysis of Vegetable Seed Supply Chain of Smallholder Farmers: The Case of Ada’a District, East Shewa Zone, Oromia National Regional State, Ethiopia”. Journal of Science and Sustainable Development 12 (1):1-12. https://aujssd.ethernet.edu.et/index.php/jssd/article/view/484.