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| 037 | _cReference Collections | ||
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| 082 | _a"X9(D1).1(X).N7, L6" | ||
| 110 | _aUnited Nations Economic and Social Affairs | ||
| 245 | 0 | _aAppropriate technologies in civil engineering work in developing countries | |
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_aNew _bYork United Nations USA _c1976 |
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| 300 |
_a"vii, 64p." _ccm. |
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| 700 | _aUnited Nations Economic and Social Affairs | ||
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