TY  - BOOK
AU  - Pimm,Stuart L.
TI  - The balance of nature ?: ecological issues in the conservation of species and communities 
SN  - 0226668304
AV  - QH541  P56 1991
PY  - 1991///
CY  - Chicago, ill.
PB  - The university of Chicago, 
KW  - Ecosistemas
KW  - Ecología
KW  - Diversidad biológica
N1  - Bibliografía : p. 391 p.; il.; Fomes 2003
ER  -