8.25 Article 8
8.26 Article 11
8.27 Article 12
8.28 Article 25
8.29 Article 27
8.30 Article 28
8.31 Article 31
8.32 Article 34

Source:  OpenStax, Copyright for librarians. OpenStax CNX. Jun 15, 2011 Download for free at http://cnx.org/content/col11329/1.2