Inventions, patents & trade marks /
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
London :
Gower Press,
1971.
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| Subjects: |
| Physical Description: | xvii, 397 p. : ill. ; 24 cm. |
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| Bibliography: | Includes bibliography: p. 373-376, and index. |
| ISBN: | 071610069X |