General Aviation Pilot Advisory and Training System (GAPATS) [microform] : semiannual technical progress report, period--1/26/97 through 7/25/97 / prepared by John Painter ... [et al.]
General Aviation Pilot Advisory and Training System (GAPATS) [microform] : semiannual technical progress report, period--1/26/97 through 7/25/97 / prepared by John Painter ... [et al.]
原資料の出版事項: [Washington, DC ; Springfield, Va. : National Aeronautics and Space Administration : National Technical Information Service, distributor, 1997]