സത്യൻ,പി,പി. Sathyan,P,P. ലോക ഇതിഹാസങ്ങൾ - 3rd ed. - Tvm: Chintha , 2017. - 96p. ISBN: 9789382808848 Subjects--Topical Terms: Loka ithihasangal Dewey Class. No.: 8M0.7 / SAT.L