1977 census of construction industries : industry series, plumbing, heating (except electric), and air conditioning special trade contractors, SIC code 1711.
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| Format: | Government Document Book |
| Language: | English |
| Series: | CC 77-I ; 10
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| Item Description: | Issued Dec. 1979. |
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| Physical Description: | 29 pages in various pagings : graphs ; 28 cm. |