Columbia subject headings:
Harvard subject headings:
Communications, Military--Environmental aspects--United States.
Communications, Military--Health aspects--United States.
Electromagnetic waves--Health aspects--United States.
Environmental impact analysis--United States.
United States. Air Force. Ground Wave Emergency Network (GWEN)
Princeton subject headings:
Communications, Military--Environmental aspects--United States.
Communications, Military--Health aspects--United States.
Electromagnetic fields--Health aspects--United States.
Environmental impact analysis--United States.
Ground Wave Emergency Network (Telecommunication system)