Engwall, K S <br/><br/>
The formation of R-prime deletion mutants and the identification of the symbiotic genes in Rhizobium fredii strain USDA191.  [electronic resource] 

 -  Plant molecular biology  Jan 1986 
 - 41-51 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0167-4412 
<br/><br/><label>Standard No.: </label>10.1007/BF00021305  doi