Cullen, J <br/><br/>
Identification of flowering plant families: including a key to those native and cultivated in north temperate regions 

 - 4th 
 - Cambridge  Cambridge University  1997 
 - xii,215p p. 
<br/><br/><label>ISBN: </label>0 521 58550 3 
<br/><br/><label>Subjects--Index Terms: </label>Angiosperms - Identification