Gunga, M., Mburu, M., Nyabundi, J. and Jama, B. (2008) “Influence of line-planted trees and phosphorus application on water”, East African Agricultural and Forestry Journal, 69(1&2). Available at: https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/60 (Accessed: 27February2024).