| 000 | 00290nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 220816s9999||||xx |||||||||||||| ||und|| | ||
| 020 | _a471369314 | ||
| 245 | 0 |
_aIntroduction to potential theory _cHelms, L. L. |
|
| 260 |
_aNew York, _bWiley-Interscience _c1969 |
||
| 300 |
_aix, 282 p. _billus. _c24 cm. |
||
| 999 |
_c2284 _d2284 |
||