key to the families of British Diptera
By: by D.M. Unwin.
Contributors: Field Studies Council.
Edition: 2nd reprint with minor revisions.
Series: FSC publication -- S9
Publisher: Field Studies Council
Published: 1984
Place of publication: Taunton
Language: eng
Other titles: Field studies.
Notes: Reprinted from Field studies, vol.5, no.3, 1981.

At head of title : AIDGAP.