Javier Sierra
- Auteur
Boeken van Javier Sierra
Kathy Sierra
Javier Sierra
Bert Bates
Badass – Making Users Awesome
Imagine someone forced you to create a new bestselling product or service. "Or else", they said, and you believed them. You have no marketing budget, and this product or service must have sustainable success.
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Javier Sierra
El maestro del Prado y las pinturas profeticas/ The Master of the Prado And the Prophetic Paintings