Abridgments of specifications. Class 97 : philosophical instruments, including optical, nautiacl, surveying, mathematical, and meteorological instruments. Period A.D. 1855-1900 [1855-1866, 1867-1876, 1877-1883, 1884-1888, 1889-1892, 1893-1896 et 1897-1900
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From Librairie Alain Brieux, Paris, France
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