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| 041 | _aeng | ||
| 080 | _aDBSI 1647 : part- 2 : 1984 | ||
| 245 | _apH measurements : part - 2 : specification for reference value standard solutions and operational referance standard solutions | ||
| 250 | _a | ||
| 260 | _aLondon | ||
| 260 | _bBSI | ||
| 260 | _c1984 | ||
| 300 | _a20 p. | ||
| 300 | _c | ||
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| 490 | _aBSI 1647 : part- 2 : 1984 | ||
| 700 | _a | ||
| 650 | _a | ||
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| 942 | _2UDC | ||
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||