Introduction and Summary
    Published Date 
  
  
    Copyright 1966
  
  
    ISBN 0870144715
  
 
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      Copy CitationRobert Ferber, The Measurement and Interpretation of Job Vacancies (NBER, 1966), chap. 2, https://www.nber.org/books-and-chapters/measurement-and-interpretation-job-vacancies/introduction-and-summary.