TY  - GEN
ED  - BRITISH STANDARDS INSTITUTION
TI  - BS 4331 : Pt. 2 : 1972 : Methods for assessing the performance characteristics of ultrasonic flaw detection equipment : part 2. Electrical performance
PY  - 1972///
CY  - London
PB  - British Standards Institution
N1  - STD1328
ER  -