Mapuranam was a grammar book in Tamil language which was considered authoritative during the second Sangam period.
References
↑Srinivasa-iyengar, P.T. (1929). History of the Tamils: from the earliest times to 600 A.D. New Delhi: Asian Educational Service. pp.231–232. ISBN81-206-0145-9.{{cite book}}: ISBN / Date incompatibility (help)
↑Zvelebil, Kamil (1973). The Smile of Murugan: On Tamil Literature of South India. Leiden: Brill. p.47. ISBN90-04-03591-5.