Walker, Denise C <br/><br/>
Mass notification and crisis communications : planning, preparedness, and systems / Denise C. Walker 

 - Boca Raton, FL :   CRC Press,  2012 
 - xxii, 528 p.:   ill.;   25 cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781439874387 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Emergency management <br/>Emergency communication systems <br/>Risk communication <br/>Crisis management
<br/><br/><label>Dewey Class. No.: </label>384.5 WAL 2012