000 00313pam a2200133a 44500
082 _aBTS
_bMONO 4766
100 _aKaminow,I P
245 1 _aBALANCED OPTICAL DISCRIMINATOR
260 _a
_b
_c1964
300 _a4
500 _aBound With Bts Mono 4751-4765, 4767-4775
964 _gCIRC
997 _aTR17451 C
999 _c400940
_d400940