“Acute Toxicity of Endosulfan to Immature and Adult Gastropods Lymnaea Radix Cor( Annandale and Prashad , 1919)”. 2008. University of Thi-Qar Journal of Science 1 (2): 13-18. http://mail.jsci.utq.edu.iq/index.php/main/article/view/266.