NLM® Classification Fundamentals

Classification (Class) Numbers


Table G/Geographic Notation


Format of Geographic Cutter Numbers

The notation for a specific jurisdiction is composed of two letters and one or two numbers (i.e., GI8—Italy, JK6—South Korea, AN1—Nebraska).

image showing G Geographical Region Europe, First Letter I, Number Identifier Italy
image showing Geographical Region United States, First Letter N, Number Identifier Nebraska

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

Sample of Table G Listing of 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]
  • HB35—Benin [country]
  • etc.