Fiction books are shelved by their call numbers, which consist of FIC and then the first 3 letters of an author's last name.
For example, Paper Towns by John Green is shelved under
Non-fiction books are shelved by their call numbers, which consist of the Dewey Decimal system call number and then the first three letters of the author's or editor's last name.
For example, Dewey: The Small-Town Library Cat Who Touched the World by Vicki Myron is shelved under
The 600s are the Dewey Decimal class for Technology and Science. The 630s are the subclass for Agriculture and 636 denotes books on Animals. 636.8 designates books on cats. Because the book was authored by Vicki Myron, we also add MYR to the end of the call number to further organize books in this call number range.