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Specifications of Letters Patent for Inventions and Provisional Specifications
其他書名
1878 (1879), 3901 - 4000
出版
Published and sold at the Commissioners of Patents Sale Departement
, 1879
URL
http://books.google.com.hk/books?id=pDF9L4XbS5kC&hl=&source=gbs_api
EBook
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