TY  - BOOK
AU  - Watson, R.T....[et.al]
TI  - Global biodiversity assessment: summary for policy-makers
SN  - 9780521564809
U1  - P 333.9516 21st ed.
PY  - 2011///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Biological diversity
KW  - Biological diversity conservation
N1  - Published for the United Nations Environment Programme
ER  -