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The licensor cannot revoke these freedoms as long as you follow the license terms.

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Image Use

Unless otherwise specified, the images used in this text have a variety of open copyright licenses, including “ND – No derivatives”. Review the image attributions at the bottom of each chapter for license information. The following images have been used with permission or are under a special license.

• The cover image used in this book is © Kwantlen Polytechnic University. If this book is being adapted, it must have a different cover. The background image is Sunset Kanchenjunga by J.P. Ganguly, available in the Public Domain.