Davis, Peter Hadland. <br/><br/>
The identification of flowering plant families  : including a key to those native and cultivated in north temperate regions 

 - 3 ed. 
 - Cambridge :  Cambridge University,  1989 
 - 133 p. 
<br/><br/><label>LCCN: </label>61637 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Angiospermas.<br/>Flores--Identificación.<br/>Plantas--Floración.
<br/><br/><label>Dewey Class. No.: </label>582.13  / D3 1989