IRS13
Scientific Report No. IRS-13 Information Storage and Retrieval
Thesaurus, Phrase and Hierarchy Dictionaries
chapter
E. M. Keen
Harvard University
Gerard Salton
Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government.
VI 1-9
Collection and Number of
Dictionary Phrases
IRE-3 Thesaurus-2 93
IRE-3 Thesaurus-3 374
CRAN-2 Thesaurus-3 309
ADI Thesaurus-i 247
Data on Phrase Dictionaries
Fiq. 4