TY  - BOOK
TI  - Waterbird population estimates
T2  - Wetlands International global series no; 12
SN  - 9058820122
U1  - KUŞ 598.2924 
PY  - 2002///
CY  - Wageningen, Netherlands
PB  - Wetlands International
KW  - Water birds -- Geographical distribution
KW  - Bird populations -- Estimates
N1  - Includes bibliographical references and index
ER  -