Jabbar F- Al-maadhidi. Effects of L-Methionine-DL-Sulphoximine(MSO) and 3-(3,4-Dichlorophenyl)- N-N-dimethylurea(DCMU) on Physiological Activity of Cyanobacteria Nostoc Species Isolated from Lichen Peltigeracanina. JMAUC 2016, 8, 42-52.