Ecology and human need /
Derr, Thomas Sieger, 1931-.
Ecology and human need / by Thomas Sieger Derr. - Philadelphia : Westminster Press, [1975] - 174 p. ; 21 cm.
Published in 1973 under title: Ecology and human liberation.
Includes bibliographical references.
0664248063
74022126 //r942
Environmental ethics.
GF80 / .D47 1975
Ecology and human need / by Thomas Sieger Derr. - Philadelphia : Westminster Press, [1975] - 174 p. ; 21 cm.
Published in 1973 under title: Ecology and human liberation.
Includes bibliographical references.
0664248063
74022126 //r942
Environmental ethics.
GF80 / .D47 1975
