00470nam a2200145Ia 4500008004100000020001800041040001300059082001000072245001800082260002300100260000900123856008800132999001700220952008700237190415s9999    xx            000 0 und d  a9780309550574  aPK-NaQUE  a387.7 0aFuture Flight  bNational Academies  c2002  ahttps://ebookcentral.proquest.com/lib/hec-ebooks/detail.action?docID=3377923&query=  c65536d65533  00104070aQUESTCLbHECDLd2019-10-09l0pA8r2019-10-09 00:00:00w2019-10-09yBK