TY  - BOOK
AU  -  Knutson, Lloyes Vernon.
AU  -  Lloyes Vernon Knutson
TI  - Biology of snail-killing sciomyzidae flies
SN  - 9780521867856
U1  - 595.7 KNU-B ZOO. 3621 
CY  - New York
PB  - Cambridge
KW  - Snails as carriers of disease
ER  -