Crawford, R M M. <br/><br/>
Studies in plant surivival /  
NULL. 
 - NULL :   ill.,figs. ;   NULL  Attached published papers .  
<br/><br/>NULL 
<br/><br/><label>ISBN: </label> NULL (Pbk) 
<br/><br/><label>Dewey Class. No.: </label>I;5  / CRA