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  1. 1

    The sexual activity and birth control use of American teenagers per Levine, Philip B.

    Publicat 2000
    Llibre

    The sexual activity and birth control use of American teenagers
  2. 2

    Extended benefits and the duration of UI spells : evidence from the New Jersey extended benefits program per Card, David

    Publicat 1998
    Llibre

    Extended benefits and the duration of UI spells : evidence from the New Jersey extended benefits program

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