Narayanan Nair, P. (1957). Keralam valarunnu: Part. 4. S.P.C.S..
Chicago Edition CitationNarayanan Nair, Pala. Keralam Valarunnu: Part. 4. Kottayam: S.P.C.S., 1957.
MLA Edition CitationNarayanan Nair, Pala. Keralam Valarunnu: Part. 4. S.P.C.S., 1957.
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