Johnson, Leander F. <br/><br/>
Methods for research on the ecology of soil-borne plant pathogens 
by Leander F. Johnson and Elroy A Curl 
 - Minneapolis  Bugess  c1972 
 - viii, 247p.;  22cm. 
<br/><br/><label>Dewey Class. No.: </label>581.5072  / JOH