Parfomak, Paul W., <br/><br/>
Physical security of the U.S. power grid  :  high-voltage transformer substations  / 
Paul W. Parfomak. 
 - [Library of Congress public edition]. 
 - 1 online resource. 
 - Report / Congressional Research Service ;  R43604 .
 - CRS report ;  R43604. .
<br/><br/> The CRS report home page provides access to all versions published since 2018 in accordance with P.L. 115-141; earliest version dated 2015.  Report includes illustrations.  CRDP Program record. 
<br/><br/>Report includes bibliographical references. 
<br/><br/><label>LCCN: </label>2019231882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric power systems--Security measures--United States.<br/>Electric substations--Security measures--United States.<br/>Electric transformers--Security measures--United States.
<br/><br/><label>GPO Item No.: </label>0807-A-07 (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>LC 14.23:R 43604/