Agamum Puramum is a collection of Literary Essays about the Tamil literature and culture.These Eight essays 4 based on Agam and 4 on Puram detailing the history and culture of tamil literature and culture. A. S. Gnanasambandan (10 November 1916 - 27 August 2002), was a Tamil writer, scholar and literary critic from Tamil Nadu, India. He is also known by his Tamil initials as Aa. Sa. Gna.