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by Clay ShirkyHardcover details (USA). details (UK). details (Germany). details (Canada). ISBN: 978-1-59420-253-7 ISBN-10: 1-59420-253-2 Penguin Press · 2010 |
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| 2011 | Paperback | Cognitive Surplus: Creativity and Generosity in a Connected Age |
| 2010 | Hardcover | Cognitive Surplus: Creativity and Generosity in a Connected Age |
| 2010 | MP3 CD | Cognitive Surplus: Creativity and Generosity in a Connected Age |