Tahir, I. M. G., Khudur, S. A., & Anwar, A. M. (2019). Effect of Indoleacetic Acid and Zinc Sulphate Application on Growth and Some Physiological Parameters of Cowpea (Vigna sinensis Savi) Plants. Kurdistan Journal of Applied Research, 4(1), 15-19. https://doi.org/10.24017/science.2019.1.3