Ball, Ellen M.  <br/><br/>
Serological tests for the identification of plant viruses / 
Ellen M. Ball, with sections contributed by A. I. E. Aapola ... et al. 
 - St. Paul, Minn.:  American Phytopathological Society,  1974. 
 - 31 p., 1 leaf of plates :   ill. ;   28 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant viruses--Identification.<br/>Serology--Technique.