Bamuaafa مسس, Fadel رمع, Al-Koor بعس. Effect of some intercropping systems cowpea with maize on land equivalent ratio. Univ. Aden J. Nat. and Appl. Sc. [Internet]. 2017 Aug. 31 [cited 2025 Apr. 7];21(2):217-24. Available from: https://uajnas.adenuniv.com/index.php/uajnas/article/view/246