TY  - BOOK
AU  - Indian Standards Institution
TI  - Code of practice for ultrasonic pulse echo testing by contact and immersion methods
U1  - 389.6 IS:3664 
PY  - 1981///
PB  - New Delhi
KW  - NON - DESTRUCTIVE TESTING -- STANDARDS
KW  - ULTRASONIC TESTING -- STANDARDS
ER  -