On most books, the ISBN can be found on the back cover, next to the barcode. If a book doesn’t show the ISBN on the back cover, look on the page featuring the copyright and publisher information and the ISBN will be found there.
An ISBN number never expires. Even very old numbers with only 10 digits can be converted into a 13-digit code.
In Nigeria, ISBN is issued only by the National Library.
No. ISBN is a unique number assigned to books individually.
Please visit here for more information,Â
Need help?