Print version: Frahm, Jill. So power can be brought into play. [Fort George G. Meade, Md.] : Center for Cryptologic History, National Security Agency, 2000
Microfiche version: Frahm, Jill. So power can be brought into play. [Fort George G. Meade, Md.] : Center for Cryptologic History, National Security Agency, 2000