William K.Purves...[et al.] William K. Purves ... [et al.] William K. Purves ... [et al.]. William H. Press ...[et al.] William H. Rhodes...[et al.] William H. Press ... [et al.] William E. Burr ... [et al.] William H. Press ... [et al.]. William J. Bruns ... [et al.] William S. Davis ... [et al.].