Campbell Douglas Houghton <br/><br/>
Evolution of the land plants 
Campbell Douglas Houghton 
 - Allahabad  Centrl Book Depot         1961 
 - ix,731p.  cm. 
<br/><br/><label>Standard No.: </label>49850 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant evolution<br/>Botany
<br/><br/><label>Dewey Class. No.: </label>I:66, K1