Indian standard recommended practice for ultrasonic testing of steel plates 
Indian Standards Institution 
 - New Delhi  Indian Standards Institution  1967 
 - 6p. 
<br/><br/> IS 4225 : 1967 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Standards <br/> Steel Plates<br/> Ultrasonic Testing <br/>NASA Thesaurus 
<br/><br/><label>Universal Decimal Class. No.: </label>083.7:669.14-41  / ISI