Course Content Ex39 (pages 34-45) REV PARTB Ex41 (pages 46-51) S4 Part B Ex42 (pages 46-49) S4 Part B Ex48 (pages 46-49) PARTB Ex46 (page 50-55) S4 Part B Ex45 (pages 46-53) S4 Part B Ex52 (Companion page 88) S4 Part B
