Columbia subject headings:
Biological warfare--Environmental aspects.
Chemical warfare--Environmental aspects.
Nuclear warfare--Environmental aspects.
Weather control--War use--Environmental aspects.
Harvard subject headings:
Biological warfare--Environmental aspects.
Chemical warfare--Environmental aspects.
Ecology.
Nuclear warfare--Environmental aspects
Weather control--War use--Environmental aspects.
Princeton subject headings:
Weapons of mass destruction.
Weather control--War use--Environmental aspects.