TY  - BOOK
AU  - Barnes,H.F.
TI  - Gall midges of economic importance 
U1  - 581.6 BAR.5  
PY  - 1951///.
CY  - London : 
PB  - Crosby Lockwood & Son Ltd., 
KW  - Gall midges
N1  - Includes index.; 5 v. : Gall midges of trees
ER  -