Geesink, R <br/><br/>
Thonner's analytical key to the families of flowering plants  

 - The Hague:   Leiden University Press,   1981 
 - xxvi, 231p. 
 - Leiden botanical series  5 .
<br/><br/><label>ISBN: </label>90-6021-462-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Universal Decimal Class. No.: </label>582.5   / M1