Columbia subject headings:
Ecology--Moral and ethical aspects.
Environmental ethics.
Jonas, Hans, 1903-1993--Interviews.
Nature--Effect of human beings on.
Philosophy of nature.
Harvard subject headings:
Ecology--Moral and ethical aspects
Environmental ethics.
Jonas, Hans, 1903-1993--Interviews.
Nature--Effect of human beings on
Philosophy of nature
Princeton subject headings:
Environmental ethics.
Philosophy of nature.