The identifying number designated to an individual item in the library's collection.
Information about an item in the library's collection, such as the author, summary, or subject headings. In the past, this data was kept on a physical notecard, but now most libraries use electronic records. At Van Wylen Library, when you click on an item in your search results, you will be directed to its digital record.
Many public libraries and high school libraries use the Dewey Decimal System to organize their collections. At this point in your life, you may be most familiar with this system of simple numerical order (plus author's last name if necessary). In this case, 636 designates the general category of "Pets."
Academic libraries hold specialized collections and often require much more precision than public libraries. Letters, not numbers, designate primary subject classes. Both letters and numbers in each line designate more specific course attributes. Going down the spine line by line will help you find books in order using the Library of Congress Classification system at Van Wylen Library.
Try searching for the topic of this class. When you see your results, you can check the box for "available in the stacks" to only see print books.
The Library of Congress Outline link leads to a quick overview of which Call "letters" go with which Topic.
(You don't need to know this to use the library.)
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(Image: University System of Georgia. (n.d.). The Library of Congress Classification System (LC). The Online Library Learning Center. https://www.usg.edu/galileo/skills/unit03/libraries03_04.phtml)