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024 _a32212
037 _cTextual
040 _aCRL
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041 _2eng
_aeng
082 _aMD53, H6 close sec
100 _aLyon Thoburn C.
_9637098
245 0 _aPractical air navigation
250 _a2nd
260 _c1946
650 _aINDUSTRIAL ARTS
942 _hMD53, H6 close sec
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999 _c1055020
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