TY  - BOOK
AU  - Perennou,Christian
AU  - Mundkur,Taej
TI  - Asian waterfowl census 1991: mid-winter waterfowl counts, January 1991 
PY  - 1991///
CY  - Slimbridge
PB  - International Waterfowl and Wetlands Research Bureau
KW  - Waterfowl
KW  - Census
ER  -