| 000 | 00418nam a2200169Ia 4500 | ||
|---|---|---|---|
| 008 | 220907s9999 xx 000 0 und d | ||
| 020 | _a0021787204 | ||
| 040 |
_aGS-LRC _cGS-LRC |
||
| 082 | _aC. 372.4 Ar 7520 C1991 | ||
| 100 | _aArnold, Virginia A. | ||
| 245 | 0 | _aObserving | |
| 250 | _a- | ||
| 260 |
_aU.S.A. _bMacmillan/McGraw-Hill Publishing Company _c1991 |
||
| 300 | _a400 | ||
| 942 | _cBK | ||
| 999 |
_c4654 _d4654 |
||