EI Publications

The Ei Thesaurus 6th Edition is available - Order your copy today!  Over 370 new access and retrieval routes have been included, as well as updated and new classification codes, plus: 

  • 10,200 preferred terms, including 370 new terms
  • 9,420 non-preferred terms (synonyms)
  • Alphabetical arrangement
  • Details including history, scope, relationships and variants