The link to the course material does not work, or is giving me an error

To give authors proper credit for their work, we provide a secure link to the source of an author’s material. When the author moves or changes the website where the material is hosted you may get a "page not found" error. If this happens, please email us by using the contact us via the Help icon at bottom-right of the page, call our live support at  541-833-0087 or use the Contact Us button under the Resources tab.

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