Crum, Howard A.  1922- <br/><br/>
Mosses of eastern North America / 
Howard A. Crum and Lewis E. Anderson 
 - New York :  Columbia University Press,  1981 
 - 2 v. :  ill. ;  26 cm. 
<br/><br/>Bibliography : p.1301-1314 
<br/><br/><label>ISBN: </label>0231045166 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mosses--United States<br/>Mosses--Canada