Somerset hoverflies : [status and distribution] /
Levy, E. T.
Levy, D. A.(David Alan),1962-
Somerset Wildlife Trust.
Diptera Recording Scheme.
Somerset Invertebrates Group.
Somerset Environmental Records Centre.
Yeovil : E.T. & D.A. Levy,
c1998.
"The first fully comprehensive county survey for Diptera Recording Scheme (English Nature), Somerset Invertebrates Group and the Environmental Records Centres" - cover.
Bibliography: p73. - Includes index.
Hoverflies
Hoverflies