1977 census of construction industries : industry series, installation or erection of building equipment, N.E.C., special trade contractors, SIC 1796.
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| Format: | Government Document Book |
| Language: | English |
| Series: | CC 77-I ; 25
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| Item Description: | Issued Sept. 1979. |
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| Physical Description: | 29 pages in various pagings : graphs ; 28 cm. |