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Nielsen and metadata to identify market research

ISTC - International Standard Text Code

The International Standard Text Code is a unique identifier for text-based works.

" ISTCs are as revolutionary for the book trade as the ISBN Was, and
ISTC is the natural evolution of the ISBN in a more complex and mature book industry "

Main:

http://en. wikipedia.org / wiki / International_Standard_Text_Code
http://en.wikipedia.org/wiki/International_Standard_Serial_Number
http://www.nielsenbookdata.co.uk/uploads/press/1ISTC_CrucialToolForPublishingMarketIntelligence.pdf