Ultrasound:   Environmental health criteria 22 

 - Geneva:   WHO,   1982 
 - 199p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health 
<br/><br/><label>Subjects--Index Terms: </label>Environment  
<br/><br/><label>Universal Decimal Class. No.: </label>615.837.3  / M2