TY  - GEN
AU  - Barnes, A C
TI  - Gall midges of economic importance Vol  2 : Gall midges of  cereal crops
T2  - Agricultural and horticultural series
U1  - 632.2 BAR 
CY  - London, Crosby Lockwood &son Ltd
KW  - Gall midges- Economic importance/ Cereal crops- Gall midges
ER  -