Conard, Henry Shoemaker <br/><br/>
How to know the mosses and liverworts 
Henry S. Conard; revised by Paul L. Redfearn, Jr. 
 - 2nd. ed. 
 - Dubuque, Iowa  W. C. Brown Co.  1979, c1956. 
 - ix, 226 p.  illus. 
 - Pictured key nature series .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bryophytes--Identification.--North America<br/>Liverworts--Identification.--North America<br/>Mosses--Identification.--North America