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| openbare werken | |||
| openbare/publieke werken | |||
| civiele techniek; grond-, water- en wegenbouw; weg- en waterbouw | |||
| Obras Publicas: 33 phrases in 9 subjects |
| Construction | 3 |
| Economy | 1 |
| General | 17 |
| Industry | 2 |
| Insurance | 1 |
| Law | 1 |
| Social science | 1 |
| Transport | 5 |
| United Nations | 2 |