Title: More than useful, essential for any catogories of negociators.
Product review: The author explain not only how, but why the respect of "tiers parties" necesseraly flow with the respect of myself (my "NO"). YES-NO-YES processus, is not only a method,it's an attitude of winners, both for ourself and for others parts. This title is not for one-read only; it's for reference book for a life, public or private.
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