TY  - BOOK
AU  - Williams, Carrington Bonsor,
TI  - Insect migration
AV  - QL496 .W64 1958
U1  - 595.7 
PY  - 1958///
CY  - London
PB  - Collins
KW  - Insects
KW  - Migration
N1  - Includes bibliography
ER  -