Author: Friend, J. Newton
Publisher:Charles Scribner's Sons, New York
Copyright:1953
Author: Bhargava, Visheshwar Sarup
Publisher:Munshiram Manoharlal, Delhi
Copyright:1966
Author: Raja, P. K. S.
Publisher:Annamalai University, Annamalainagar
Copyright:1953
Author: Majumdar, Bimanbehari
Publisher:General Printers and Publishers Pvt. Ltd, Calcutta
Copyright:1966
Author: Majumdar, Bimanbehari
Publisher:General Printers & Publishers Pvt. Ltd., Calcutta
Copyright:1966
Author:
Publisher:Numismatics Society of India, Bombay
Copyright:1953
Author: Mukherjee, Promode Kumar
Publisher:World press, Calcutta
Copyright:1966
Author: Penck, Walther
Publisher:Macmillan, London
Copyright:1953
Author: Mylonas, George E.
Publisher:Princeton University Press, New Jersey
Copyright:1966
Author: Ramachandran T.N
Publisher:Director General, Archaeological Survey of India,New Delhi
Copyright:1999
Author: Goodenough, Ward H.
Publisher:The University Museum, Philadelphia
Copyright:1953
Author: Murti, B. S. N.
Publisher:Beacon Information and Publications, New Delhi
Copyright:1953
Author: Roy, Dilip Kumar
Publisher:Bharatiya Vidya Bhavan, Bombay
Copyright:1966
Author: Chaturvedi, Shrinath
Publisher:Government of Rajasthan, Jaipur
Copyright:1966