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  1. Negretti & Zambra's encyclopædic illustrated and descriptive reference catalogue of optical, mathematical, physical, photographic and standard meteorological instruments, manufactured and sold by them
    By: Negretti and Zambra.
    Edition: Rev. and cor. ed.
    Publication info: London,Hayman brothers and Lilly,1887?
    Contributed by: University of California Libraries (archive.org)
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