ch. 1. Let there be light -- ch. 2. A little chemistry -- ch. 3. Academics unlimited -- ch. 4. Commercial photoinitiators -- ch. 5. Factors affecting the use of photoinitiators -- ch. 6. Photoproducts and the yellowing of coatings -- ch. 7. Cationic chemistry -- ch. 8. Factors affecting the use of cationic photoinitiators.