O'Hagan, John T. <br/><br/>
Technology aids fire service / 
John T. O'Hagan, Edward H. Blum 
 - California :  Rand Corporation,  1972 
 - 2 pages ;  28 cm. 
 - The Rand paper series ;  p. 4872 .
 - Rand paper series ;  p. 4872 .