Provisional atlas of the aculeate Hymenoptera of Britain and Ireland.
Edwards, Robin.
Broad, Gavin.
Centre for Ecology and Hydrology (Great Britain)
Joint Nature Conservation Committee (Great Britain)
Huntingdon : Centre for Ecology and Hydrology,
2005.
At head of title:  "Joint Nature Conservation Committee" and "Centre for Ecology & Hydrology".
Includes bibliographical references (p. 131-139) and index.