Author: Trostsky, Leon
Publisher:Pioneer Press,New York
Copyright:1942
Author: Das, Rajani Kanta
Publisher:Prabasi Press, Calcutta
Copyright:1942
Author: Hausammann, S.; Anand,Mulk Raj
Publisher:DB Taraporevala sons and co, Bombay
Copyright:1958
Author: Karunakaran, K. P.
Publisher:Oxford University Press, Calcutta
Copyright:1958
Author: Kesvan, B.S.
Publisher:Central Reference Library, Calcutta
Copyright:1958
Author: Khanna, P. N.
Publisher:Engineers Publishers, New Delhi
Copyright:1958
Author: Misra, B. R.
Publisher:Humphrey Milford Oxford University,London
Copyright:1942
Author:
Publisher:Indian Standard Institution, New Delhi
Copyright:1958
Author: Chowdhury, Kafiluddin Ahmad ; Ghosh, S. S
Publisher:Manager of Publications, Delhi
Copyright:1958
Author: Chatterji, Suniti Kumar
Publisher:Gujrat Vernacular Society, Ahemdabad
Copyright:1942