| 000 | 00461pam a2200133a 44500 | ||
|---|---|---|---|
| 008 | 140414b1948 xxu||||| |||| 00| 0 eng d | ||
| 082 |
_a621.381 _bATT |
||
| 110 | _aAMERICAN TELEPHONE AND TELEGRAPH COMPANY , NEWYORK | ||
| 245 |
_aThe Bell System Technical Journal , Volume 27 , 1948 _c |
||
| 260 |
_aNEWYORK _bAMERICAN TELEPHONE AND TELEGRAPH COMPANY _c1948 |
||
| 650 | _aBELL SYSTEM , MECHANICAL ENGINEERING | ||
| 690 | _aMECHANICAL ENGINEERING | ||
| 906 | _a43385 | ||
| 999 |
_c41056 _d41056 |
||