Author: Sahai, Govind
Publisher:Rajkamal Publications, Delhi
Copyright:1947
Author: Spanton, W. S.
Publisher:Winsor & Newton, London
Copyright:1947
Author: Feachem, Richard
Publisher:B. T. Batsford Ltd., London
Copyright:1963
Author: Zeuner, Frederick Everard
Publisher:Hutchinson & Co.ltd, London
Copyright:1963
Author: Prajnanananda, Swami
Publisher:Ramakrishna Vedanta Math, Calcutta
Copyright:1963
Author: Ferm, Vergilius
Publisher:Rider And Company, London
Copyright:1950
Author:
Publisher:George Routledge & Sons Ltd., London
Copyright:1947
Author: Daniel, Glyn E.
Publisher:Gerald Duckworth & Co., London
Copyright:1950
Author: Khosla, A. N.
Publisher:Khalsa Printing Press, Simla
Copyright:1950
Author: Rajeswara Rao, P.
Publisher:Sree Panduranga Press, Eluru
Copyright:1950