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040			_aMAIN
041			_aEnglish
082			_a621.3822 _bPAG
100			_aPage, H.
245			_aPrinciples of aerial design
260			_aLondon _bD.van nostrand _c1966
300			_a172p.
650			_aAerial design
650			_aCommunication engineering
650			_aEngineering
942			_cBK
999			_c36530 _d36530