Bhattacharya2 and Shibani Chaudhury1*, Sulata Maity1, Sonali Roy2, Shelley. 2010. “Accumulation of Lead and Zinc in Earthworm Lampito Mauritii (Kinberg): Effect on Survival, Growth and Acetylcholinesterase Activity”. Recent Research in Science and Technology 2 (4). https://updatepublishing.com/journal/index.php/rrst/article/view/412.