Kenk, Roman <br/><br/>
Freshwater triclads (Turbellaria) of North America, IX , the genus sphalloplana / 
Roman Kenk 
 - City of Washington :  Smithsonian Institution Press,  1977 
 - 38 p. :  ill. ;  26 cm. 
 - Smithsonian contributions to zoology  no.246 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sphalloplana<br/>Platyhelminthes--North America