Hassanain M. Gabash, Ahmed Zaer Resan, and Fatimah Mahdi Jasim. “THE EFFECT OF DIFFERENT LEVELS OF LEAD ON THE VEGETATIVE AND ROOT GROWTH OF TAGETES ERECT L”. British Journal of Global Ecology and Sustainable Development, vol. 16, May 2023, pp. 152-63, http://journalzone.org/index.php/bjgesd/article/view/330.