Robert Q. Riley ; with contributions by Dr. Wonshik Chee. Frank K. Reilly ; with contributions by Don M. Chance. Robert J. Sternberg ; with contributions by Josephine F. Wilson. Victor F. Veley ; with contributions by Abraham I. Pallas. Edward G. Hinkelman ; with contributions by gilbert Mansergh ; 导读李月菊. Joel E. Ross ; with contributions by Susan Perry. edited by P. Bradshaw ; with contributions by P. Bradshaw ... editor, K. Du閟ek ; with contributions by J.P. Bell ... [et al.] Bernard W. Pipkin, with contributions by D.D. Trent. Arthur H. Nilson ; with contributions by David Darwin.