prepared by a staff of specialists; Harold Pender and William A. Del Mar, editors. prepared by a staff of specialists ; J. Kenneth Salisbury, editor. prepared by a staff of specialists. Assistant editor: H. L. Pinkerton. prepared by a staff of specialists under the editorship of Ovid W. Eshbach. prepared by a staff of specialists under the editorship of Werner von Bergen. prepared by a staff of specialists. Edited by Eugene M. Grabbe, Simon Ramo [and] Dean E. Wooldridge. prepared by a staff of specialists. Editor: A. Kenneth Graham; assistant editor: H. L. Pinkerton.