000 00275nam a2200109Ia 4500
008 160710s1963 xx 000 0 und d
100 _aBROCKERSBY,C.F. & OTHERS
245 _aULTRASONIC DELAY LINES
260 _aLONDON
_bILLIFFE BOOKS
_c1963
300 _a297
942 _2ddc
_cB
999 _c27840
_d27840