CRANV1P1 ASLIB Cranfield Research Project: Factors Determining the Performance of Indexing Systems: VOLUME 1. Design, Part 1. Text Additional Tests chapter Cyril Cleverdon Jack Mills Michael Keen Cranfield An investigation supported by a grant to Aslib by the National Science Foundation. Use, reproduction, or publication, in whole or in part, is permitted for any purpose of the United States Government. - 109 - A25 /ob[OCRerr] ;o 7-/ J/[OCRerr]3 1715 /Sl& lq7[OCRerr] 7-.O07_ 2[OCRerr]7q FIGURE 7.2 CITATION INDEX REFERENCE CARD Io67 v" v" i/ ,/ F ,/ FIGURE 7.3 CITATION INDEX MASTER CARD