Campbell, Douglas Houghton, 1859-1953 <br/><br/>
The structure and development of mosses and ferns (archegoniatae) 

 - New York  MacMillan  1930 
 - x, 708 p.  il.; 23 cm. 
<br/><br/> Incluye: bibliografía p. 645-680, e índice 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HELECHOS<br/>BRYOPHYTA