ASTM-D2521 › Complete Document History
Standard Specification for Asphalt Used in Canal, Ditch, and Pond Lining
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1976 R21 EDITION - REAPPROVED IN 2021 - Jan. 6, 2021
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Obsolete Revision Information: |
1976 R14(E1) EDITION - REAPPROVED IN 2014, EDITORIALLY CORRECTED - Jan. 1, 2014
1976 R08 EDITION - REAPPROVED IN 2008 - Nov. 1, 2008
1976 R02(E1) EDITION - EDITORIALLY SWITCHED FROM INCH - April 1, 2002
1976 R97 EDITION - REAPPROVED IN 1997 - Jan. 1, 1997
1976 R93(E1) EDITION - ASPHALT USED IN CANAL, DITCH, - Nov. 1, 1993
1976(E) EDITION - ASPHALT USED IN CANAL, DITCH, - Sept. 24, 1976
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