Errata

A small number of minor errors have been discovered since the book was published.

Chapter 2, page 31, 6. The word ‘Professional’ should be deleted.

Chapter 8, page 222, line 4. ‘eight’ should be replaced by ‘ten’

Chapter 11, page 310. line 15, 'reliability' (last word in line) should be replaced by 'POFOD'

Chapter 11, p310, line 19. 'greater' (first word in line) should be replaced by 'smaller'