mrt
14
2016
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Time is free, but it's priceless. You can't own it, but you can use it. You can't keepit, but you can spend it. Once you've lost ityou can never get it back.
Harvey MacKay
Leren? Ik werk liever! Werkboek voor performanceverbetering in organisatiesLeontine Bibo, Karin Derksen, Sjors van der Heide
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