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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
From the Introduction by Karl Menger 'Ernst Mach's book..., one of the great scientific achievements of the last century, remains a model for the presentation of the development of ideas in any field.... It is an inspiration to philosophers of science, a valuable source of information for historians of physics, and a splendid help to teachers of mechanics. Its first half is a most stimulating introduction of unsurpassed clarity and depth for beginners.'
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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