Airline Costs and Managerial Efficiency
    Published Date 
  
  
    Copyright 1965
  
  
    ISBN 0870143085
  
 
                  - 
      Copy CitationRobert J. Gordon, Transportation Economics (NBER, 1965), chap. 4, https://www.nber.org/books-and-chapters/transportation-economics/airline-costs-and-managerial-efficiency.