Discoveries and inventions of the twentieth century /
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
London : New York :
G. Routledge ; E.P. Dutton,
1930.
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| Edition: | 3d. ed., rev. and enl. |
| Subjects: |
| Physical Description: | 476 p. : ill. |
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