| 000 | 00571nam a2200169Ia 4500 | ||
|---|---|---|---|
| 008 | 131223s9999 xx 000 0 und d | ||
| 040 | _aISI KOLKATA | ||
| 041 | _aEnglish | ||
| 082 |
_a338.47621385 _bB433 |
||
| 110 | _aBell Telephone Laboratories | ||
| 245 | _aSome illustrations of engineering economics from Bell telephone laboratories | ||
| 260 |
_aNew York _bBell Telephone Laboratories _c1926 |
||
| 300 | _a20p. | ||
| 500 | _aData prepared for discussion at the Bell System Educational Conference, June, 1926 | ||
| 650 | _aEngineering economics | ||
| 942 | _cBK | ||
| 999 |
_c104311 _d104311 |
||