What is an ISBN?

From isbn.org:

The International Standard Book Number (ISBN) is a 10 or 13 digit number that uniquely identifies books and book-like products published internationally.  On newer titles, they are often the barcode on the cover. Newer ISBNs start with '978'.

For more detailed information, see isbn.org.

Applying for an ISBN (materials published by SFU):

The SFU Library supplies ISBNs for materials published by SFU. Contact us at libadmin@sfu.ca for more information and/or to get an ISBN.