Columbia subject headings:
Apodemus sylvaticus--Ecology--Congresses.
Clethrionomys glareolus--Ecology--Congresses.
Mammals--Ecology--Congresses.
Yellow-necked mouse--Ecology--Congresses.
Harvard subject headings:
Apodemus sylvaticus--Ecology--Congresses.
Clethrionomys glareolus--Ecology--Congresses.
Mammals--Ecology--Congresses.
Yellow-necked mouse--Ecology--Congresses.
Princeton subject headings: