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The International Standard Book Number (ISBN) is a unique identifier for books. An ISBN is not mandatory, and does not provide copyright on a work. It is used internationally across the book trade and library sector.
Apply for an ISBN
ISBN Agency
Thorpe-Bowker
PO Box 42
Prahran, VIC 3181
Tel: +61 3 6185 0043
Email: myidentifiers@thorpe.com.au
Internet: https://www.myidentifiers.com.au/
Further information is available at Thorpe-Bowker's My Identifiers homepage.