TY  - BOOK
AU  - Heywood, V. H.
TI  - Global biodiversity assessment: sumary for Policy-Markers 
SN  - 9780521564809
PY  - 1995///
CY  - Cambridge, United Nations Environment Programme
PB  - University Press
KW  - Biodiversidad
KW  - Conservación
KW  - Leyes
ER  -