TY  - BOOK
AU  - Vermeulen,J.W.Charlotte
AU  - Spaans,Arie L.
TI  - Feeding ecology of Javan Pond Ardeola speciosa and Cattle Egret Bubulcus ibis in North Sulawesi, Indonesia, with additional notes on the occurrence of ardeids
PY  - 1987///
CY  - Arnhem
PB  - Research Institute for Nature Management
KW  - Herons
KW  - Indonesia
KW  - Cattle egret
N1  - References: p. 31-32
ER  -