Symposium on Healthy planting material: strategies and technologies <br/><br/>
Healthy planting material: strategies and technologies / 
organized by the Association of applied biologists and the British Crop protection Council; Thornton Heath, 6th-8th January 1986. 
 - Thornton Heath  British Crop protection Council  1986 
 - xiv, 263 pages 
 - Monograph No.33 .
<br/><br/><label>Dewey Class. No.: </label>632  / SYM