| 000 | 00521nam a22001577a 4500 | ||
|---|---|---|---|
| 020 | _a0335060046 | ||
| 040 | _cIITK | ||
| 041 | _aeng | ||
| 082 |
_a631.583 _bOp2e Units 5-6 |
||
| 245 |
_aEnvironmental control and public health _bclean and dirty water Unit 5, water analysis, standards and treatment Unit 6 _cprepared by the Course team, The Open University |
||
| 260 |
_aMilton Keynes _bThe Open University Press _c1975 |
||
| 300 | _a131p | ||
| 650 | _aEnvironmental control | ||
| 650 | _aPublic health | ||
| 942 | _cBK | ||
| 999 |
_c557026 _d557026 |
||