Low Frequency variability of extra galactic radio sources  proceedings of the national radio Astronomy observatory Workshop on low Frequency variability of extra galactic radio sources, held in Green Bank, West Virginia, April 21-22 1982 
edited by William D Cotton and Steven R. Spangler 
 - West Virginia  National Radio Astronomy Observatory  1982 
 - [various pagings.] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics thesaurus<br/>Extragalactic radio sources<br/>Radio Astronomy
<br/><br/><label>Universal Decimal Class. No.: </label>524.7-77  / LOW