Mandal, J., Maithy, P. and Mehdi, S. 1983. Microbiota and Catagraphs from the Varikunta area of Cuddapah supergroup. Journal of Palaeosciences. 31, (1-3) (Dec. 1983), 191–199. DOI:https://doi.org/10.54991/jop.1983.1720.