San Francisco Public Library
155.6
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http://bibfra.me/vocab/lite/Category
Label
155.6
Code
155.6
Source
ddc
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19
The Seasons of a man's life, by Daniel J. Levinson ; with Charlotte N. Darrow [and 3 others]
The happiness curve, why life gets better after 50, Jonathan Rauch
The defining decade, why your twenties matter and how to make the most of them now, Meg Jay
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