Kirui, V. J. “Contribution of Perkerra Irrigation Scheme to the Livelihoods of Marigat Sub-County Residents in Baringo County, Kenya”. The International Journal of Humanities & Social Studies, vol. 5, no. 1, Jan. 2017, https://internationaljournalcorner.com/index.php/theijhss/article/view/125217.