Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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
01.12.1981
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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