K, P., & P.S., U. (2018). A Survey on the Pteridophyte Flora of the 18 Selected Sacred Groves in Chalavara Grama Panchayath, Palakkad District, Kerala. International Journal of Environment, Agriculture and Biotechnology, 3(4), 1222–1225. https://doi.org/10.22161/ijeab/3.4.11