_:n7c96c4094ed34fafa1109cbe132838e6xb6
<http://schema.org/text>
"<p>There are five parts to an ISBN number\n<ol>\n<li>the current prefix of '978' or '979'\n<li>the registration group or country\n<li>the publisher\n<li>the publication element (title and format)\n<li>the single digit check digit at the end of the ISBN\n</ol>\n</p>\n"
<https://www.addall.com/isbn/>