Cleverdon, Cyril W <br/><br/>
Report on the first stage of an investigation into the comparatrive efficiency of indexing systems 

 - Cranfield:   The College of Aeronautics,   1960 
 - 163p. 
 - .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research investigation
<br/><br/><label>Subjects--Index Terms: </label>Indexing systems 
<br/><br/><label>Universal Decimal Class. No.: </label>D 001.815(047)  / K2