استانداردها

ETSI - European Telecommunications Standards Institute (1413)

BSI - British Standards Institution (873)

IEEE - The Institute of Electrical and Electronics Engineers, Inc. (122)

American Water Works Association (AWWA) (21)

AASHTO - American Association of State Highway and Transportation Officials (9)

APHA,American Public Health Association (1)

AWWA,American Water Works Association (1)

WEF,Water Environment Federation (1)

2000 - 2024 (75480)

1922 - 1999 (16500)