TY  - BOOK
AU  - Derr,Thomas Sieger
TI  - Ecology and human need
SN  - 0664248063
AV  - GF80 .D47 1975
U1  - 261.8/3 
PY  - 1975///]
CY  - Philadelphia
PB  - Westminster Press
KW  - Environmental ethics
N1  - Published in 1973 under title: Ecology and human liberation.; Includes bibliographical references
ER  -