Showalter, Leonard C <br/><br/>
Closed-circuit TV for engineers & technicians / 
by Leonard C. Showalter 
 - Indianapolis, Ind. :  Howard W. Sams,  1973 
 - 272 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0672210142 
<br/><br/><label>LCCN: </label>73-166445 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Closed--Circuit television