D.C. power circuits  

 - Washington, D. C.  National Aeronautics and Space Administration  1958 
 - iii+23p.  figs 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dc Power SuppliesPower Converters
<br/><br/><label>Universal Decimal Class. No.: </label>621.38(085)  / NAS