Balakrishnan. (1971). Paristhithivijnanam. State Instutute of Languages.
Chicago Edition CitationBalakrishnan. Paristhithivijnanam. Trivandrum: State Instutute of Languages, 1971.
Deismireacht MLABalakrishnan. Paristhithivijnanam. State Instutute of Languages, 1971.
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