- Laying and fitting of water, gas, and sewer pipe
- Installation and repair of plumbing fixtures
- Implements and apparatus
- Specialized personnel and organization; etc.
- Water supply 312
- Sewer systems 364
- Oil and gas pipelines 315
- Gas plants 382
- Heating and lighting systems 354
- Plumbing fixtures 414
Outline of Cultural Materials. George P. Murdock, et al., eds. New Haven, Conn. Human Relations Area Files, Inc. 1961. xxv, 164 p.