Asher, N. J. (1968). The demand for intercity passenger transportation by VTOL aircraft. Arlington, Va. : Springfield, Va.: Institute for Defense Analyses Program Development Division ; distributed by Clearinghouse for Federal Scientific and Technical Information.
Chicago Style CitationAsher, Norman J. The Demand for Intercity Passenger Transportation By VTOL Aircraft. Arlington, Va. : Springfield, Va.: Institute for Defense Analyses Program Development Division ; distributed by Clearinghouse for Federal Scientific and Technical Information, 1968.
MLA CitationAsher, Norman J. The Demand for Intercity Passenger Transportation By VTOL Aircraft. Arlington, Va. : Springfield, Va.: Institute for Defense Analyses Program Development Division ; distributed by Clearinghouse for Federal Scientific and Technical Information, 1968.