Measurement of fluid flow in closed conduits :  ultrasonic transit-time meters for liquid 

 - Switzerland :  International Organization for Standardization,  ©2012. 
 - vi, 69 p. :  ill. 
<br/><br/> ISO 12242:2012(E) 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Standard No.: </label>ISO 12242:2012(E)