Spangler, Paul <br/><br/>
Aquatic coleoptera (Dystiscidae :  noteridae; Gyrinidae; Hydrophilidae; Dascillidae; Helodidae; Psephenidae; Elmidae) 

 - Monographs of the academy of natural sciences of Philadelphia .
<br/><br/>bibliogr. p. 415-417, h.t 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entomologie<br/>Coleoptera<br/>Forêt
<br/><br/><label>Subjects--Index Terms: </label>Pérou