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Remember happiness doesn't depend upon who you are or what you have; it depends solely on what you think.

Dale Carnegie

Laatst aangepast op donderdag, 17 november 2011 19:42  

 

A goal properly set is halfway reached.

Zig Ziglar 

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continuous improvement john hunter current success final achievement

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evidence-based training methods ruth colvin clark

Evidence Based Training Methods
A Guide for Training Professionals
Ruth Colvin Clark

Bij Bol.com | Managementboek | Amazon.nl

 

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