Engel John J. <br/><br/>
A monograph of clasmatocolea :  hepaticae / 
John J. Engel. 
 - Illinois :  Field Museum of Natural History,  1980. 
 - 229 p. :  ill. ;  23 cm. 
 - Publication ;  1311. .
<br/><br/>Includes bibliographical references : (p. 198-203) and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clasmatocolea--Classification.<br/>Liverworts--Classification.