Columbia subject headings:
Local transit--Cost of operation--Congresses.
Local transit--Fares--Congresses.
Local transit--Finance--Congresses.
Harvard subject headings:
Local transit--Cost of operation--Congresses.
Local transit--Fares--Congresses.
Local transit--Finance--Congresses.
Princeton subject headings:
Local transit--Cost of operation--Congresses.
Local transit--Fares--Congresses.
Local transit--Finance--Congresses.