this edition written and researched by Mark Baker...[et al.] this edition written and researched by Mark Baker...[et al. this edition written and researched by Mark Baker ...[et al.] this edition written and researched by Mark Baker ...[et al. this edition written and researched by Jenny Walker... [et al.] this edition written and researched by Damian Harper...[et al.] this edition written and researched by Stuart Butler...[et al.] this edition written and researched by Sandra Bao ...[et al.] this edition written and researched by David Else ...[et al.] this edition written and researched by Jenny Walker... [et al.