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DE1999? 3? 37?
?? 40??? 1999? 3? 37?? ??? ??? ??.
?? ???? 1999? 3? 37?? ??? ??? ??? ????: ?? ??, ??, ???, ????, ?? ??, ?? ? ??, ??, ??, ?? ??, ???? ?? ? ?? ??.
Professional Standard - Environmental Protection, 1999? 3? 37?
未注明發布機構, 1999? 3? 37?
AASHTO - American Association of State Highway and Transportation Officials, 1999? 3? 37?
- T37-1999 ?? ? ?? ??? ??? ?? ?? ??? ?? ?? ??? ??(?20?, ASTM D546-94)
PL-PKN, 1999? 3? 37?
Professional Standard - Urban Construction, 1999? 3? 37?
Professional Standard - Railway, 1999? 3? 37?