Offie, Ndubuisi N., and Anselm A. Enete. “Economics of Organic Manure Use in Tomatoes Production in Enugu State, Nigeria”. Canadian Journal of Agriculture and Crops 5, no. 2 (May 20, 2020): 103–107. Accessed May 18, 2024. https://onlinesciencepublishing.com/index.php/cjac/article/view/426.