000 00342pam a2200145a 44500
082 _a621.381
_bB782u
100 _aBrockelsby, Charles Fountain
245 1 _aULTROSONIC DELAY LINES
260 _aLondon
_bIliffe Books
_c1963
300 _a297
650 _aDelay Lines
700 _aGibson, R. W.
964 _gCIRC
997 _a25168 s C
999 _c416440
_d416440