Pappootty,K Sarvavijnanakosham,Volume 15/ K.Pappootty - Thiruvananthapuram: he State Institute of Encyclopaedic Publications, 2010. - 808p. Malayalam Encyclopaedia in 20 volumes. Subjects--Topical Terms: Encyclopedias and dictionariesMalayalam Dewey Class. No.: 039 / PAP/S V.15