Nielson, Mervin William. <br/><br/>
Procedures for screening and testing alfalfa for resistance to the alfalfa seed chalcid, 
by M. W. Nielson. 
 - [Washington]  1967. 
 - 10 p.  illus.  26 cm. 
<br/><br/> Caption title. 
<br/><br/><label>LCCN: </label>agr67000315  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alfalfa--Disease and pest resistance.<br/>Bruchophagus roddi.<br/>Alfalfa.<br/>Bruchophagus roddi.
<br/><br/><label>National Agricultural Library Call No.: </label>A420 R31 no. 120