Aquatic insects of California : with keys to north American genera and California species /
edited by Robert L. Usinger.
-- Los Angeles : University of California Press, cop. 1956
- 508 p.
ISBN 0-520-01293-3
Insectos acuáticos - California
595.7(794)
ISBN 0-520-01293-3
Insectos acuáticos - California
595.7(794)