Module 3
How to Read Call Numbers

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Books in this library are shelved according to the Library of Congress Classification System, which separates all knowledge into 20 classes. Each class corresponds to a letter of the alphabet and is then further subdivided into subclasses using additional letters and numbers. For example, you would find Teaching 4- to 8-year-olds: Literacy, Math, Multiculturalism, and Classroom Community at LB1139.25 .T418 2003. This number, known as a ‘call number’ tells us where the book is located in the stacks. ("Stacks" is a term libraries use to describe the shelving for library material.)

Books on shelf showing call numbers

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