%0 Journal Article %T Activity of radon ($^{222}$Rn) in the lower atmospheric surface layer of a typical rural site in south India %A K Charan Kumar %A M Venkat Ratnam %A Nagaraja Kamsali %A T Rajendra Prasad %J - %D 2016 %U https://www.ias.ac.in/describe/article/jess/125/07/1391-1397