TY  - BOOK
AU  - Keller,David R.
TI  - Environmental ethics: the big questions 
T2  - Philosophy: the big questions
SN  - 1405176393
AV  - GE42  .E58 2010
PY  - 2010///
CY  - Malden
PB  - Wiley-Blackwell
KW  - Environmental ethics
ER  -