استانداردها

BSI - British Standards Institution (66)

AASHTO - American Association of State Highway and Transportation Officials (27)

American Water Works Association (AWWA) (7)

ETSI - European Telecommunications Standards Institute (1)

IEEE - The Institute of Electrical and Electronics Engineers, Inc. (1)

2000 - 2024 (6566)

1922 - 1999 (590)

English (7016)

English, French (18)

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Spanish (4)