Author: M. Azizul Haque, Khan Bahadur
Publisher:Khan Bahadur M. Azizul Huque, Krishnagar
Copyright:1931
Author: Palande, Manohar Ramchandra
Publisher:Oxford University Press, Calcutta
Copyright:1931
Author:
Publisher:Nehru Science Centre-National Council of Science Museums, Mumbai
Copyright:2009
Author: Mayhew, Arthur
Publisher:Faber and Gwyer, London
Copyright:1925
Author: Kendall, Patricia
Publisher:Charles Scribner's, New York
Copyright:1931
Author: Prasad, Bimal
Publisher:Manohar Publishers and Distributors, New Delhi
Copyright:2001
Author: Prasad, Bimal
Publisher:Manohar Publishers and Distributors, New Delhi
Copyright:2009
Author:
Publisher:National Archives of India, New Delhi
Copyright:2009
Author: Mukherjee, Mridula
Publisher:Jawaharlal Nehru Memorial Fund, New Delhi
Copyright:2009
Author: Prasad, H.Y. Sharada Damodaran, A. K. S. Gopal
Publisher:Jawaharlal Nehru Memorial Fund, New Delhi
Copyright:2001
Author: Kumar, Ravinder Prasad, H. Y. Sharada S. Gopal
Publisher:Jawaharlal Nehru Memorial Fund, New Delhi
Copyright:2001