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_9111767 _aAfrican regional symposium on techniques for enviroonmentall |
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| 245 |
_aTechniques for environmentally sound water resources development _c/ Alexandaria, 1991;edited by R. Wooldridge |
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| 260 |
_aLondon _bPentech Press _c1991 |
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| 300 | _a332 p. | ||
| 509 | _aZSN | ||
| 650 | _aWater resource engineering' Waater resource-Environmenta | ||
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