Conversion of stock code among Yahoo! Finance and Google Finance

[yccheok]

Hi all, I was wondering, whether you have any idea on how can we convert
stock code used in Yahoo! Finance to Google Finance?

Take Tata Chemical Limited for an example :

How can we convert "TATACHEM.BO" (Yahoo Finance) converted to "BOM:500770" (Google Finance)? Is there any where, we can get a full list of such conversion table?

Thanks.
Cheok

 

[yccheok]

In another word, converting from Bombay scrip ID (TATACHEM) to Bombay scrip code (500770)