TY  - BOOK
AU  - x, x
AU  - Usinger,Robert L.
TI  - Aquatic insects California: With keys to North American genera and calliforni species
SN  - x
U1  - 595.709794/AQU 
PY  - 1956///
CY  - Berkeley
PB  - University of California Press
KW  - Insects
N1  - x
ER  -