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|---|---|---|---|
| 245 | _aClay building materials industries in Africa | ||
| 110 | _aUnited Nation, Industrial Development Organization | ||
| 260 |
_aNew York _bUnited Nation _c1971 |
||
| 500 | _aReport | ||
| 080 |
_a666.7(6) _bU6 |
||
| 041 | _aEN | ||
| 942 | _cBK | ||
| 999 |
_c114277 _d114277 |
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