This reading is OPTIONAL and meant to further enrich your understanding of the material. The different sections and chapters from the course textbook have been aligned with the sequence of Dr. Hartnell's units. No assignments are associated with this reading. Enjoy!
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(NOTE: You read Lesson 4 in Unit #2. You will not need to read it again.)
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(NOTE: This is the only Lesson from Chapter 14 that you need to read at this time. You will read the other Lessons in Unit #4.)
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