TY - BOOK AU - STEEL CASTING RESEARCH & TRADE ASSOCIATION TI - RECOMMENDED PROCEDURE FOR THE ULTRASONIC EXAMINATION OF STEEL CASTINGS PY - 1971/// CY - SHEFFIELD PB - STEEL CASTINGS RESEARCH & TRADE ASSOCIATION UR - http://krc.immt.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=4929 ER -