| 000 | 00415nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 190516s9999 xx 000 0 und d | ||
| 100 |
_aWells, Robert _96385 |
||
| 245 | 0 |
_aMessages, Men and Miles _celectronic communications-how the y work |
|
| 260 |
_bPrentice-Hall, Inc. _c1958 _aEnglewood |
||
| 300 | _a120 | ||
| 600 |
_tPhysics _91741 |
||
| 650 |
_aPhysics _91741 |
||
| 942 | _cBK | ||
| 999 |
_c112226 _d112226 |
||