THOR KOMMEDAHL <br/><br/>
CHALLENGING PROBLEMS IN PLANT HEALTH 

 - ST PAUL MINNESOTA  AMERICAN PHYTOPATHOLOGICAL SOCIETY  1983 
 - X,538 
<br/><br/><label>Subjects--Topical Terms: </label><br/> American Phytopathological Society. Plant diseases. Plants, Protection of. Plant health.
<br/><br/><label>LC Class. No.: </label>SB 731.C493 1983