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This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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Summary
| Description |
Français : Le problème de la bougie. A- Composantes du problème. B- Solution |
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| Date | ||||
| Source | Duncker, Karl (1945) On Problem Solving, Psychological Monographs, 58, American Psychological Association OCLC: 968793. | |||
| Author | Karl Duncker | |||
| Permission (Reusing this file) |
A search was made from the copyright renewals in 1972[1][2] and the first half of 1973[3] (but admittedly not the second half of 1973[4] because it is not organized in an easily searchable manner) under the titles "A.P.A", "American Psychological Association", "APA", "Duncker", "On Problem Solving", and "Psychological Monographs" - no entries were found. This book appears not to have renewed its copyright. | |||
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Licensing
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This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
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Original upload log
Transferred from en.wikipedia to Commons by Khayman using CommonsHelper.
The original description page was here. All following user names refer to en.wikipedia.
- 2006-04-17 14:20 Jdick1 366×388× (12056 bytes) Duncker, K.
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 03:02, 7 September 2012 | 366 × 388 (12 KB) | File Upload Bot (Magnus Manske) | Transfered from en.wikipedia by User:Khayman using CommonsHelper |
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