| 000 | 00378pam a2200145a 44500 | ||
|---|---|---|---|
| 082 |
_aBTS _bMONO 2461 |
||
| 100 | _aLovell,C A,Mcguigan,J H | ||
| 245 | 1 | _aEXPERIMENTAL POLYTONIC SIGNALING SYSTEM | |
| 260 |
_a _b _c1955 |
||
| 300 | _a24 | ||
| 500 | _aBound With Bts Mono 2455-60,2462-83.Lack No.2458 & 2459. | ||
| 700 | _aMurphy,O J | ||
| 964 | _gCIRC | ||
| 997 | _aTR19821 C | ||
| 999 |
_c402611 _d402611 |
||