| 31. | Concertina wire spirals across the lawn of the Terraza del Avila apartment complex.
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| 32. | Most swim across the bay or scale concertina fences.
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| 33. | The Marines strung concertina wire sectioning off the interior into different pens Saturday.
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| 34. | Soldiers stretched concertina wire around the perimeter of the village and established checkpoints.
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| 35. | Accordions and concertinas are also common, and other instruments are sometimes used.
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| 36. | Wheatstone was also the first to patent a Duet concertina, in 1844.
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| 37. | One of the most famous was the Wheatstone concertina.
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| 38. | The button accordion and the concertina were becoming common.
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| 39. | American troops blockaded roads leading into the city with Humvees and concertina wire.
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| 40. | For public transport use, this door may be an automatic concertina type.
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