Jaques, H. E. <br/><br/>
Plant families: how to know them. 

 - 2a 
 - Dubuque, Iowa, USA :  W. C. Brown Company Publishers,  1949. 
 - 177 p. :  il. ;  22 cm. 
<br/><br/><br/>Ingles 
<br/><br/><label>ISBN: </label>0697048403  Normal 
<br/><br/><label>Dewey Class. No.: </label>580