Singh, U. (1998). Administrative system in India: (Vedic age to 1947). APH.
Tohutoru Kātū Chicago (17th ed.)Singh, U.B. Administrative System in India: (Vedic Age to 1947). New Delhi: APH, 1998.
Tohutoro MLA (9th ed.)Singh, U.B. Administrative System in India: (Vedic Age to 1947). APH, 1998.
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