Essays by Leonard A.Lauder...[et al.] Essays by Leonard A.Lauder...[et al. essays by Peter Walker...[et al.] essays by Peter Walker...[et al. essays by Gerardo Mosquera ... [et al. essays by Jed Morse...[et al.] essays by Kay Heymer...[et al.] essays by Cynthia Becker...[et al. essays by Elissa Auther...[et al. essays by Jed Morse...[et al.