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Using wood taken from that tree after it died in the 1860s, Hoppin and his friend John Levering carved four walking sticks. In a letter written around 1876, Hoppin, a prudent man, carefully ...
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Air Cavity,Coupled System,Coupling Elements,Coupling Method,Coupling Region,Cylindrical Cavity,Femtosecond Laser,Fiber Coupler,Fs Laser,Hollow Fiber,Hollow Structure ...
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