Dalhatu AK, Khan AA, Umar ZD. Study of Root-Knot Problems in Ajiwa Dam Area, Katsina State, Nigeria. Int. J. Environ. [Internet]. 2015 Feb. 22 [cited 2024 Apr. 25];4(1):204-9. Available from: https://www.nepjol.info/index.php/IJE/article/view/12189