About beta particle results of 1,705
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92:52
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75:04![El Arte del Inicio por Guy_Kawasaki - TiECon 2006 [The Art of the Start - subtítulos en español]](https://img.youtube.com/vi/KURivXspgzM/hqdefault.jpg)
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48:49
90:34
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59:00
139:05
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89:00
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53:32
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