International seed testing  association (ISTA) <br/><br/>
International Rural for Seed Testing Edition 2009 

 - CH-8303 Basserdorf,Switzerland  International Seed Testing Association (ISTA)  2009 
 -  560 
<br/><br/><label>ISBN: </label>13 978-3-906549-53-8 
<br/><br/><label>Universal Decimal Class. No.: </label>582.4