Yousif Malik, Amir Abdullahi, and Elamin Mohamed Elamin. 2018. “ACTION THRESHOLD LEVELS OF HELICOVERPA ARMIGERA (HBN.) ON COTTON AT DIFFERENT STAGES OF PLANT GROWTH”. International Journal of Research -GRANTHAALAYAH 6 (3):39-48. https://doi.org/10.29121/granthaalayah.v6.i3.2018.1496.