Sinha, Rajiv K., George Hahn, Pancham K. Singh, Ravindra K.Suhane, and Allam Anthonyreddy. 2011. “Organic Farming by Vermiculture: Producing Safe, Nutritive and Protective Foods by Earthworms (Charles Darwin’s Friends of Farmers)”. Journal of Experimental Agriculture International 1 (4), 363-99. https://doi.org/10.9734/AJEA/2011/519.