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Table G is a cutter system of notations that provides geographical or jurisdictional arrangement of materials under specific class numbers in the NLM Classification. The use of Table G permits a shelving order which is controlled geographically and alphabetically (generally).

For every number in the schedule annotated "Table G," there is a corresponding number annotated "Not Table G" that is used for works on the same topic that have no geographic emphasis. This is assigned with a .1 number.

Example of Table G annotation

Class Number	Caption
WA Public Health Health Issues of Specific Groups of People
WA 300	Health issues of specific groups of people (Table-G)
WA 300.1	General coverage (Not Table-G)