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| 020 | _a0582063302 | ||
| 037 | _cGeneral Book | ||
| 040 |
_aRTL _cRTL _beng |
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| 041 |
_2eng _aeng |
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| 082 | _aX 9(D85).1(X).N9, N1 | ||
| 100 |
_aLloyd Barry _9319628 |
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| 245 | 0 | _aSurveillance of drinking waterquality in rural are | |
| 260 |
_aNew York _bLongman Scientific and Technical USA _c1991 |
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| 300 |
_axvi, 171p. _ccm. |
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| 500 | _aWorld Health Organization; United Nations Environment Programes | ||
| 650 | _aElectrical | ||
| 700 |
_a Melmer Richard _9319629 |
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| 942 |
_hX 9(D85).1(X).N9, N1 _cGB _2CC |
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_c627642 _d627642 |
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