editors in chief, N. Sakamoto, K.G.M.M. Alberti ; associate editors, E.F. Pfeiffer ... [et al.]. editor-in-chief, Philip Wexler ; associate editors, Bruce D. Anderson... [et al.] editor-in-chief, Leonard R. Johnson ; associate editors, Fayez K. Ghishan ... [et al.] editors, Manuel Velasco ... [et al.] ; associate editors, Fuad Lechin ... [et al.].