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  1. 1
    by Twyman, F. (Frank), 1876-1959
    Published 1955
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    Optical glassworking /
  2. 2
    by Twyman, F. (Frank), 1876-1959
    Published 1988
    “...The Adam Hilger series on optics and optoelectronics...”
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    Prism and lens making : a textbook for optical glassworkers /

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