TY - BOOK TI - Airline economics SN - 0888655169 AV - HE 9780 .T74 1992 PY - 1992/// CY - New York, NY PB - Springer Berlin Heidelberg UR - https://www.loc.gov/catdir/enhancements/fy1619/2016951951-b.html UR - https://www.loc.gov/catdir/enhancements/fy1619/2016951951-d.html UR - https://www.loc.gov/catdir/enhancements/fy1619/2016951951-t.html ER -