Usinger, Robert L.  1912-1968, <br/><br/>
Aquatic insects of California /   with keys to North American genera and California species 
W.C. Bentinck [and others]. 
 - Berkeley,  University of California Press,  1956. 
 - ix, 508 p.  illus., maps.  29 cm. 
<br/><br/><label>LCCN: </label>56058271  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic insects--California.<br/>Insetos aquáticos--California<br/>Insects--California.<br/>Insetos--California
<br/><br/><label>LC Class. No.: </label>QL496  / .U75 
<br/><br/><label>Dewey Class. No.: </label>595.7