CONARD, Henry S. <br/><br/>
How to know the Marses and Liverwarts 
Henry S. CONARD 
 - 2nd ed. 
 - America  Wm. C. Brown Pub.  1979 
 - xi, 302p. 
 - The Pictured Key Nature Series .
<br/><br/><label>ISBN: </label>697047687