Botswana handbook of seed certification standards and rules, May 199 4. 

 - Gaborone, Botswana :    Republic of Botswana, Dept. of Agricultural Research,    [1994]. 
 - ii, 13 p. ;    30 cm. 
<br/><br/><label>ISBN: </label>9991210970 
<br/><br/><label>LCCN: </label>95-980591