TY  - BOOK
AU  - Wolf, Edward C.,
TI  - On the brink of extinction: Conserving the diversity of life 
T2  - Worldwatch paper
SN  - 0916468798
AV  - QH75 W65
PY  - 1987///
CY  - Washington, D.C.
PB  - Worldwatch institute
KW  - Conservación de la biodiversidad
ER  -