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Geographic Tables

• The geographic tables of the NLM Classification consist of nine geographic regions

• Additionally, special provision is made for international agencies that frequently publish materials related to medicine

• Each broad region or group is identified by a letter
  • A—United States (Federal Government)
    • AA1—United States (as geographical area)
  • D—Americas
  • F—Great Britain
  • G—Europe
  • H—Africa
  • J—Middle East and Asia
  • K—Australasia
  • L—Islands of the Pacific and Indian Oceans
  • M—International Agencies
  • P—Polar Regions

• There are two additional sections:
  
  • Historical Geographic Locations
  • Obsolete Table G Notations

Exclusions

• Although specific states, the District of Columbia, and regions of the United States are listed, no specific breakdowns are given for other countries, e.g., Canadian provinces or Australian states
• With the exception of New York City, no cities are included in Table G
• "Table G" information is not supplied in the NLM Classification Index

Format of Geographic Cutter Numbers

• The notation for a specific jurisdiction is composed of two letters and one or two numbers

• The first letter of a notation represents the broad geographical region or jurisdiction, and the second one is the first letter of the name of a smaller region which can be a country, or, in the case for the states of the United States, a state

• Do not confuse a letter "I" with a number "1", or a letter "O" with a number "0"

Example of Table G Listing

H Section—Africa

• VII. AFRICA

  • HA1—Africa [continent]
  • HA12—Africa South of the Sahara [region]
  • HA14—Central Africa [region]
  • HA15—Eastern Africa [region]
  • HA2—North Africa [region]
  • HA21—Western Africa [region]
  • HA25—Southern Africa [region]
  • HA4—Algeria [country]
  • HA6—Angola [country]