Jenan Atiyah Ghafil, Ayaid Khadem Zgair, Shaymaa Hussein Hassan, & Walaa Najim Abd alwahed. (2016). Effect of lead on biofilm formation by environmental isolates of Bacillus spp. World Journal of Experimental Biosciences, 4(2), 147-149. https://journals.uniscipub.com/index.php/Wjebs/article/view/97