Srivastava, V. S.Jha, V. N.Patnaik, R. L.Rajesh KumarShukla, A. K.Sahoo, S. K.Tripathi, R. M.Puranik, V. D.2010-03-152010-03-152008http://hdl.handle.net/123456789/21304701 bytestext/htmlenNatural background radiationGamma radiation levelRadonMeasurements of external gamma level and atmospheric radon concentration in Gangatic plane of Bihar at Patna cityArticle