Gradstein, Stephan R <br/><br/>
A taxonomic monograph of the Genus Acrolejeunea (Hepaticae), with an arrangement of the Genera of Ptychanthoideae 

 - Lehre [Germany]:  J. Cramer,  1975 
 - 162 p. . ; xxiv plates 
<br/><br/><label>ISBN: </label>3768209687 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lebermoose
<br/><br/><label>Dewey Class. No.: </label>581 GRA