India. Registrar General & Census Commissioner & Sekhar, A. C. (1977). Census of India, 1971. Series 1 India: Establishment tables (E-I, E-II part A, E-II part C, E-III & E-IV). Controller of Publication.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIndia. Registrar General & Census Commissioner और A. Chandra Sekhar. Census of India, 1971. Series 1 India: Establishment Tables (E-I, E-II Part A, E-II Part C, E-III & E-IV). Controller of Publication, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIndia. Registrar General & Census Commissioner और A. Chandra Sekhar. Census of India, 1971. Series 1 India: Establishment Tables (E-I, E-II Part A, E-II Part C, E-III & E-IV). Controller of Publication, 1977.
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