Classification key of patents for inventions
list of headings arranged alphabetically 1953.
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Author
Publication
1955 - Manager of Publications, Karachi, Pakistan
Language
English
Word Count
150,000 words, Guess
Page Count
600 pages
Identifiers
- Library of Congress Control Number79307177
- Open LibraryOL4479140M
Classifications
- DDC354/.549/00824
- LCCT304.5.F4 P34 1955
Subjects
Topics
Places
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