Berger, Helmut. <br/><br/>
Monograph of the Urostyloidea (Ciliophora, Hypotricha)  [electronic resource] / 
by Helmut Berger. 
 - Dordrecht :  Springer,  2006. 
 - xv, 1303 p. :  ill., digital ;  25 cm. 
 - Monographiae Biologicae ;  85 .
<br/><br/><label>ISBN: </label>9781402052736 (electronic bk.) 9781402052729 (paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hypotrichida--Classification.<br/>Hypotrichida--Identification.<br/>Life Sciences.<br/>Zoology.<br/>Ecology.<br/>Animal Systematics/Taxonomy/Biogeography.
<br/><br/><label>Dewey Class. No.: </label>579.49