| 000 | 00365pam a2200145a 44500 | ||
|---|---|---|---|
| 082 |
_aBTS _bMONO 1841 |
||
| 100 | _aNewell,N A | ||
| 245 | 1 | _aSINGLE-FREQUENCY SIGNALING SYSTEM FOR LONG TELEPHONE TRUNKS | |
| 260 |
_a _b _c1951 |
||
| 300 | _a7 | ||
| 500 | _aBound With Bts Mono 1831-1840,1842-1850 | ||
| 700 | _aWeaver,A | ||
| 964 | _gCIRC | ||
| 997 | _aTR19639 C | ||
| 999 |
_c402915 _d402915 |
||