TY  - BOOK
AU  - Betten,Cornelius,1877-
AU  - Mosely,Martin E.
ED  - British Museum (Natural History)
TI  - The Francis Walker types of Trichoptera in the British Museum
PY  - 1940///
CY  - London
PB  - British Museum
KW  - Walker, Francis, 1809-1874
KW  - Caddis
KW  - flies
N1  - At head of title: British Museum (Natural History)
ER  -