A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Operator certification: 1980 status report
Certification boards were surveyed concerning operator certification. Results showed that the number of certified operators increased approximately 2.5 times in the period from 1970 to 1980.
Operator certification: 1980 status report
Certification boards were surveyed concerning operator certification. Results showed that the number of certified operators increased approximately 2.5 times in the period from 1970 to 1980.
Operator certification: 1980 status report
Journal ‐ American Water Works Association ; 73 ; 627-635
1981-12-01
9 pages
Article (Journal)
Electronic Resource
English
A Status Report on Operator Certification
Wiley | 1977
Status of Operator Certification and Training, 1960
| Wiley | 1961
| British Library Conference Proceedings | 1997
| Wiley | 1990
| Wiley | 1982