Answered By: Aziz Aboueleinin Last Updated: Aug 11, 2016 Views: 261
A call number is like an address; it is an alpha-numeric code that tells you where the book is located on the shelf. Each book, has its own unique call number which is attached on or near the book's spine. A book's call number also appears in the library's online catalog entry. Books are sorted alphabetically first, then numerically.