Unfortunately, most OER science repositories are All Rights Reserved (see appendix for listing).
Suggestion: remove the above sentence.
Add a sub-heading before Sources "See Also" and refer to the appendix there for resources that are less than "open" (restricted use).
I removed the sentence. I was never really happy with it. It was placed there as part of the style guide rule that there is always text between headings. I've made a note at the top that science repositories are available in the appendix. Will make a note on the other repositories as well.