Columbia subject headings:
Rats as carriers of disease--History.
Rats--Control--History.
Rats--Social aspects.
Rodents--History.
Social history.
Harvard subject headings:
Rats as carriers of disease--History.
Rats--Control--History.
Rats--Social aspects.
Rodents--History.
Social history
Princeton subject headings:
Rats as carriers of disease--History.
Rats--Control--History.
Rats--Social aspects.
Rodents--History.
Social history.