India. Registrar general and census commissioner & Devassy, M. K. (1967). Census of India 1961, Kerala: General economic tables. The manager of publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia. Registrar general and census commissioner और M. K. Devassy. Census of India 1961, Kerala: General Economic Tables. The manager of publications, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia. Registrar general and census commissioner और M. K. Devassy. Census of India 1961, Kerala: General Economic Tables. The manager of publications, 1967.
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