Subjects: LETTERS to the editor; WAR (International law); FLIGHTCALIFORNIA; UNITED States
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Subjects: LETTERS to the editor; ROBOTS; WAR
Subjects: LETTERS to the editor; UNITED States. Army; RADIATION exposure
Subjects: SCIENCE; LETTERS to the editor; PRISON violence
Subjects: LETTERS to the editor; TECHNOLOGY; NINETEEN fifties
Subjects: LETTERS to the editor; BROWN bear; HUNTING
Subjects: LETTERS to the editor; SCIENCE; MILITARY science
Subjects: LETTERS to the editor; TRAUMA centers; OCCUPATIONS
Subjects: LETTERS to the editor; SPACE colonies
Subjects: LETTERS to the editor; HIGH school students; INVENTORSUNITED States