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Edit history of sicp-ex-4.43

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22014-08-08 19:36:39+1 -1 line(s)[View this version, source] [Diff to previous]
No need to include moore and bernacle in the distinct? requirement. They are known to be disticnt. This speeds it up a little bit.
12012-08-03 14:43:03+41 -0 line(s)[View this version, source] [Diff to current|previous]
add answer
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