TY  - BOOK
AU  - Ledden,Debbie van
TI  - Waterbird count site delimitation: preliminary guidlines for Co-ordinators of the International Waterbirds Census
U1  - KUŞ 598.2924 
PY  - 2003///
CY  - Wageningen
PB  - Wetlands International
KW  - Birds
KW  - Water birds -- Conservation
KW  - Wetland ecology
N1  - A graduation project on waterbird count site delimitation
ER  -