I am looking for some source material on India.

Why I need it is; I am writing about the relation between trade and world output and describing the broad pattern of international trade.

I would appreciate any help. Thank you

Since this is not my area of expertise, I searched Google under the key words "international trade 'world output'" to get these possible sources:

http://www.nber.org/programs/iti/iti.html
http://www.wto.org/English/news_e/pres01_e/pr249_e.htm
(Broken Link Removed)
http://papers.ssrn.com/sol3/papers.cfm?abstract_id=262692
http://www.associatedcontent.com/article/15777/international_trade_what_is_it_really.html

If these sites are not adequate, continue the search with the same or similar key words.

I hope this helps. Thanks for asking.