Ezhumattoor Rajarajavarma N.Krishnapillai: Patanasahyam - Ist - Thrissur; Kerala Sahitya Akademi; 2009 - 268p. ISBN: 91-7690-185-7 Subjects--Topical Terms: Malayaalam;Encyclopediaവിജ്ഞാനകോശം Dewey Class. No.: 039.914 / EZH/N P9