Library and Information Mastery Topics






000 = Computer science, information and general works

100 = Philosophy & psychology

200 = Religion

300 = Social sciences

400 = Language

500 = Natural sciences & mathematics

600 = Technology and medicine

700 = Arts and recreation

800 = Literature & rhetoric

900 = History & geography




Call Numbers – Why are they called that? Because in early times when library shelves were not open to the public, a user would “call” for a particular number to be retrieved by library staff.


Stacks – The storage location. Before users were allowed to see the books on the shelves, they were literally stacked up horizontally, not standing with call nos. showing on the spines of the books.  Today “stacks” is synonymous with “shelves.”


Dewey Decimal System – A book classification system devised by Melvil Dewey, a librarian, educator and innovator, back in 1876. It has been revised 23 times, most recently in 2011, and is used in 135 countries  and hundreds of thousands of libraries.  In the US, it is used I school and public libraries, as well as small college libraries.” 


Updated: 2/13/2017

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