this edition written and researched by Oliver Berry... [et al.] this edition written and researched by Oliver Berry...[et al.] this edition written and researched by Oliver Berry ... [et al.] this edition written and researched by Oliver Berry ...[et al.] this edition written and researched by Alison Bing...[et al.] this edition written and researched by Andrew Bender...[et al.] this edition written and researched by Belinda Dixon...[et al.] this edition written and researched by Mark Baker...[et al.] this edition written and researched by David Else ...[et al.] this edition written and researched by Emilie Filou...[et al.]