1. Books are shelved alphabetically by Main Class first. Within the Main Class, Subclasses follow next. Hence, for example, the Subclass LB comes before the Subclass LC.  
 
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  2. If books have the same Main Class and Subclass, books are sorted by a set of numbers in the decimal system.  
 
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3. After subdivision numbers, books are shelved by author letters and numbers (called Cutter numbers). The filing is in a decimal system so that in the example below LB12.5 C3563 is shelved before LB12.5 C412.
 
 
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4. When Call Numbers are exactly the same, books are shelved according to date of publication with the most recent shelved last.
 
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5. In case of a book title is being acquired in more than one copy, books are shelved by copy information.
 
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