TY  - BOOK
AU  - Sober,Elliott
TI  - The nature of selection: Evolutionary theory in philosophical focus 
SN  - 0262192322
AV  - B818 S62
PY  - 1984///
CY  - Cambridge, massachusetts
PB  - The MIT Press
KW  - Evolución
N1  - "a bradford book"
ER  -