Author: Dey, N. C. Dey, T. K.
Publisher:Allied Agency, Calcutta
Copyright:1972
Author: Haq, Muhammad Enamul
Publisher:Asiatic Society of Bangladesh, Dacca
Copyright:1971
Author: Coleman, James C.
Publisher:D. B. Taraporevala Sons and Company Private Limited, Bombay
Copyright:1969
Author: Sarkar, Dwijendra Lal
Publisher:Alpha Publishing Concern, Calcutta
Copyright:1969
Author: Brown, Stuart Gerry
Publisher:Oxford and IBH Publishing Co. Calcutta
Copyright:1968
Author: Lahiri, N. C.
Publisher:The Astro-Research Bureau, Calcutta
Copyright:1972
Author: Shukla, M. C. Grewal, T. S.
Publisher:S. Chand and Co. Delhi
Copyright:1967
Author: Cotton, F. Albert Wilkinson, Geoffrey
Publisher:Wiley Eastern Pvt. Ltd, New Delhi
Copyright: N/A
Author: Bansil, P. C.
Publisher:Lalvani Publishing House, Bombay
Copyright:1971
Author: Devi, Lakshmi
Publisher:Lakshmi Devi, Guahati
Copyright:1968
Author:
Publisher:Scientific Book Agency, Calcutta
Copyright:1969
Author: Bose, Tarun Chandra
Publisher:Firma K. L. Mukhopadhyay, Kolkata
Copyright:1967
Author:
Publisher:Economic and Statistical Organisation, Planning Department
Copyright:1971-72