the purpose of our blog is sharing strange seens that I have seen with my blog visitors. to day I am going to show you how the earlier peoples identified the aircraft without rader system
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| Using Huge trumpets |
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| acoustic hearing aids |
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| ACOUSTIC "EARS" BEFORE RADAR - ON A SWIVEL |
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| ACOUSTIC "EARS" BEFORE RADAR - GERMAN |
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| ACOUSTIC "EARS" BEFORE RADAR - ON WHEELS |
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| ACOUSTIC "EARS" BEFORE RADAR - ENGLAND |
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