se TABLE OF CONTENTS(Cont'd) Appendix C. Concealment and Detection of Nuclear Tests Underground, report by Harold Brown and Hans A. Bethe Appendix D. Chart of Present and Future U. S. Nuclear Warhead Developments, report by the U. S. Atomic Energy Commission Appendix E. Impact of a September 1958 Nuclear Test ee ee Moratorium on Soviet Nuclear Weapons Capabilities, report by the Central Intelligence Agency