Mass shooter database, 1966-2019. 

 - 1 online resource 
<br/><br/> GPO Cataloging Record Distribution Program (CRDP). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mass shootings--United States--Databases.<br/>Firearms--United States--Databases.<br/>Dangerously mentally ill--United States--Databases.<br/>Violent crimes--United States--Databases.
<br/><br/><label>GPO Item No.: </label>0718-A (online) 
<br/><br/><label>Gov. Doc. Class. No.: </label>J 28.2:SH 7/2