Author: Woolley , Leonard
Publisher:George allen and unwin,London
Copyright:1962
Author: Mooss, Vayaskara N.S.
Publisher:Vaidyasarathy Press, Kottayam
Copyright:1950
Author: Sushena Venkatasubrahmanya, S.
Publisher:T.M.S.S.M. Library, Tanjore
Copyright:1950
Author: Reynolds, Chas E.
Publisher:Concrete Publication,London
Copyright:1962
Author: Gordon, Cyrus H.
Publisher:Collins,London
Copyright:1962
Author: Azevedo, Fernando de
Publisher:The Macmillan Company, New York
Copyright:1950
Author:
Publisher:Advaita Ashram, Himalayas
Copyright:1950
Author: Chatterjee, S.
Publisher:The Technical Journals of India, Calcutta
Copyright:1962
Author: Mountford, Charles P.
Publisher:Phoenix House, London
Copyright:1950
Author: Stcherbatsky, F. Th.
Publisher:Dover Publications, New York
Copyright:1962