استانداردها

ETSI - European Telecommunications Standards Institute (1415)

BSI - British Standards Institution (945)

IEEE - The Institute of Electrical and Electronics Engineers, Inc. (124)

AASHTO - American Association of State Highway and Transportation Officials (35)

American Water Works Association (AWWA) (28)

APHA,American Public Health Association (1)

AWWA,American Water Works Association (1)

WEF,Water Environment Federation (1)

2000 - 2024 (80204)

1922 - 1999 (16944)