Spleen focus-forming virus in friend and rausch leukemia virus preparations. 

 - [Washington, D.C.,  197-?] 
 - v. 
<br/><br/> CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leukemia--Research.
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 20.3161/A:SP 53