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Our environment is constantly changing new technologies, changes in purchasing behaviour, instantaneous information available to almost everyone, public health issues…

In this highly competitive context, the sales function is more than ever the driving force of the company, which is looking for professional salespersons capable of adapting, selling successfully and achieving their objectives.

ISBN : 978-27472-3500-6

Les lecteurs de Paul Diel trouveront dans cet ouvrage des réponses à leurs interrogations sur la genèse de la psychanalyse introspective fondée sur l'étude des motivations intimes, qui valut notamment à Paul Diel l'estime et le soutien d'Albert Einstein.