1. This material is licensed by Keio University with the consent of copy right holders.
  2. You must not distort, mutilate, modify or take other derogatory action in relation to the Work which would be prejudicial to the Original Author’s honor or reputation.
  3. This case study is available free of charge as teaching material for non-commercial use through the Creative Commons Deed(http://creativecommons.org/licenses/by-nc-nd/3.0/).

    3-1： If you want to use the material for commercial purpose, we ask for your contribution by paying a part of the material development cost (500 Yen/copy, 1000 Yen per one request)
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    3-2： If you want to use the material for commercial purpose, please fill in the required information below and e-mail to  purchase from.  We will then send you the bill and receipt.
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    3-3: The material is available free of charge for teaching at school classes.

    3-4: Please consult by email when your seminar or classes using the material is video taped, and when your usage of the material is not assumed under this license.

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    http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode