essays by Scott Allan...[et al. essays by Peter Walker...[et al. with essays by Sarah Allan...[et al. essays by Akiko Fukai ... [et al. essays by Bryan Barcena...[et al. essays by Keith Eggener...[et al. essays by Peter Walker...[et al.] essays by Ruth Barnes ... [et al. essays by Shiva Balaghi...[et al. essays by Antoine Picon ... [et al.