Columbia subject headings:
Environmental degradation.
Revolutions--History.
Social action.
Technology and civilization.
Technology--Social aspects.
Harvard subject headings:
Environmental degradation
Nature--Effect of human beings on
Revolutions--History
Social action
Technology and civilization
Technology--Social aspects
Princeton subject headings:
Environmental degradation.
Nature--Effect of human beings on.
Revolutions--History.
Social action.
Technology and civilization.
Technology--Social aspects.