Singh, S. (1973). Centre-State relations in agricultural development. Vikas Pubs.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, S.P. Centre-State Relations in Agricultural Development. Vikas Pubs, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, S.P. Centre-State Relations in Agricultural Development. Vikas Pubs, 1973.
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