TY - BOOK AU - Bureau of Indian Standards TI - Recommended Practice for Certification of NDT Personnel for Ultrasonic Examination (IS : 9346 - 1979) U1 - IS : 9346 - 1979 PY - 1980/// CY - New Delhi PB - Bureau of Indian Standards KW - Indian Standard - IT N1 - IS : 9346 - 1979 ER -