Sampson, W. T., III; Henninger, S.; Fixler, R.
view article (9.9981365)
Rooftop Emergency Heliports. Final Report.
Systems Control Technology, Inc., Arlington, VA
Federal Aviation Administration, Washington, DC,
DOT/FAA/RD-93/2; SCT No. 92RR-26; ARD-30,
June 1993,
56 p.