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Chattopadhyay, S. (1968). Early history of North India: From the fall of the Mauryas to the death of Harsa, c.200 B.C.-A.D.650 (2nd ed.). Calcutta: Academic.

Chattopadhyay, Sudhakar. Early History of North India: From the Fall of the Mauryas to the Death of Harsa, C.200 B.C.-A.D.650. 2nd ed. Calcutta: Academic, 1968.

Chattopadhyay, Sudhakar. Early History of North India: From the Fall of the Mauryas to the Death of Harsa, C.200 B.C.-A.D.650. 2nd ed. Calcutta: Academic, 1968.