Helgeson J P <br/><br/>
Use of Tissue Culture and Protoplasts in Plant Pathology 
P Helgeson 
 - London   Academic press  1983 
<br/><br/><label>ISBN: </label>01233386500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant Disease
<br/><br/><label>LC Class. No.: </label>SB 731 .H34