essays by Katherine Bourguignon...[et al. essays by Antoine Picon ... [et al. Katherine M. Bourguignon...[et al. essays by Daniel Buren ...[et al. essays by Hamilton Morris...[et al. essays by Oriol Bohigas ... [et al. essays by Patricia Berman ... [et al. essays by Steven C. Dubin...[et al. essays by Warren Breckman...[et al. Katherine M. Bourguignon...[et al.]