1992 CENSUS OF TRANSPORTATION, COMMUNICATIONS, AND UTILITIES
ESTABLISHMENT AND FIRM SIZE

Abbreviations and Symbols

      The following abbreviations and symbols are used in this CD-ROM:

      D           Withheld to avoid disclosing data for individual companies;
                  data are included in broader kind-of-business totals.
      N           Not available.
      n.e.c.      Not elsewhere classified.
      pt.         Part.
      r           Revised.
      F           Footnote.  In Annual Payroll as Percent of Revenue (PAYVAL
                  and PAYVALF), this symbol indicates that the field includes
                  establishments with no operating revenue.
      T           Total.  Bracketed to avoid disclosing data for individual
                  companies.  This line holds the total for all the lines
                  included within a bracket.
      B           Bracket.  This symbol denotes the lines that are included in
                  the total (see T above).
      *           See Introduction or Coverage and Methodology (in DOCVIEW)
                  for explanation of coverage for Railroad Transportation (SIC
                  40) and for Air Transportation (SIC 45).
      SIC         Standard Industrial Classification.