Basics Authors Upavarṣa Scholarship and Resources Scholarship Sankaran 1927 , EIP 16 2014 , Frauwallner 1972 , K.G.Natesa Sastri 1926 , T.K.Gopalaswamy Aiyangar 1941 , V.A.Ramaswami Sastri 1934 , V.A.Ramaswami Sastri 1945 , V.Raghavan 1948 Visualization + − Manuscript Institution Work Site Extract Collection Person Print