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Edit history of sicp-ex-3.12

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32014-09-16 14:40:29+34 -0 line(s)[View this version, source] [Diff to previous]
Fix the answer of ex-3.12
22013-01-05 17:18:56+1 -1 line(s)[View this version, source] [Diff to current|previous]
You had (car x) instead of (cdr x) like it is in the book. Your answer for the first response was correct though: (b)
12011-09-05 13:35:38+19 -0 line(s)[View this version, source] [Diff to current|previous]
added solution
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