Diagnosis of mineral disorders in plants.  Vol.1.  Principles 
by the late C. Bould and E.J. Hewitt and P. Needham 
 - London  H.M.S.O.  1983 
 - 170 p.  ill.(some col.)  25cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Field crops--Diseases and pests
<br/><br/><label>Dewey Class. No.: </label>632