| 000 | 00357 a2200133 4500 | ||
|---|---|---|---|
| 080 |
_a541.132 _bH 477 N |
||
| 245 | 1 | _aNew Hellige comparator for determination hydrogen-ion-concentration | |
| 260 |
_bHellige Comparator _c1927 |
||
| 650 | _aComparator | ||
| 650 | _aHydrogen-Ion-Concentration | ||
| 700 | _aHellige Comparator | ||
| 100 |
_a _d |
||
| 901 | _a611 | ||
| 999 |
_c26623 _d26623 |
||