Report of a visit to the U.S.A. Biting Fly and Cattle Grub Research Unit and the U.S.D.A.-Canada Department of Agriculture hypodermosis eradication pilot test, review and planning conference, Kerrville, Texas, U.S.A. 13-15 July 1983
Tarry, D. W.
Great Britain. Agricultural Development and Advisory Service.
[Alnwick] MAFF, ADAS
1983
Warble-flies.