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ASME Y32.7
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ASME Y32.7 72nd Edition, 2009 Graphic Symbols for Railroad Maps and Profiles
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Description / Abstract:
FOREWORD
(This foreword is not a part of American National Standard Graphic Symbols for Railroad Maps and Profiles Y32.7-1972)
This standard supersedes American National Standard Graphical Symbols for Use on Railroad Maps and Profiles, Y32.7-1957. It represents a compilation and correlation of graphic symbols used by the Engineering Division and the Communications and Signal Section of Association of American Railroads. Following approval by Subcommittee 7 and Standards Committee Y32, it was granted approval by the American National Standards Institute on August 8, 1972.
(This foreword is not a part of American National Standard Graphic Symbols for Railroad Maps and Profiles Y32.7-1972)
This standard supersedes American National Standard Graphical Symbols for Use on Railroad Maps and Profiles, Y32.7-1957. It represents a compilation and correlation of graphic symbols used by the Engineering Division and the Communications and Signal Section of Association of American Railroads. Following approval by Subcommittee 7 and Standards Committee Y32, it was granted approval by the American National Standards Institute on August 8, 1972.