000			00297 a2200121 4500
001			55089
082			_a629.13251 UND
090			_c34153 _d34153
100			_aUnderdown R B.
245			_aNavigation; ground studies for pilots, 6th Ed
260			_aOxford _bblackie _c2002
300			_a362 p.
942			_aNUST-CAE _k629.13251 UND
999			_c290162 _d290162