Keystone的作品

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Cover for Keystone · Watch and Clock Escapements a Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, with a Brief Account of the ... Nearly Two Hundred Original Illustrations.) (Paperback Book) (2009)

Watch and Clock Escapements a Co... (2009)

Cover for Keystone · Watch and Clock Escapements: A Complete Study In Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of ... and Evolution of the Escapement in Horology (Hardcover Book) (2008)

Watch and Clock Escapements: A C... (2008)