00938nam2-22003251i-450-99000026369040332120001010000026369FED01000026369(Aleph)000026369FED0100002636920001010d--------km-y0itay50------baitay-------001yy1. : Introduction to earth; XI, [2], 79 p.ill.clc.:035-010/1New YorkMcGraw-Hill1943-3 v. 29 cmFlight preparation training series0010000258932001AIR navigationMeccanica del voloTRAINING DIVISION BUREAU OF AEROAUTICS U. S. NAVYITUNINARICAUNIMARCBK99000026369040332109 035-010/1478DINAE09 035-010/3478DINAE09 035-010/2478DINAEDINAEUNINAING01