Author: Dickinson, Robert Latou Beam, Lura
Publisher:The Williams and Wilkins, Baltimore
Copyright:1949
Author: Sen, Surendranath
Publisher:National Archives of India, Delhi
Copyright:1949
Author: Elwin, Verrier
Publisher:Oxford University Press, London
Copyright:1949
Author: Tucci, Giuseppe
Publisher:SDI Publications, Roma
Copyright:1949