Samudrasastram / സമുദ്രശാസ്ത്രം edited by M.R.Thampan - Trivandrum : State Institute Of Languages , 2000 . - 221 p. Paper Back ISBN: 8176381470 Subjects--Topical Terms: Malayalam literatureStudyScience of ocean Dewey Class. No.: M807 / UMM-S