BS-500 › Complete Document History
Steel sleepers

Complete Current Edition:
   2000 EDITION - REAFFIRMED IN 12/1/2012 - Nov. 15, 2000

Obsolete Revision Information:
   1956 EDITION - WITHDRAWN, 11/15/2000 - Nov. 5, 2000
   AMD 1918 - AMENDMENT 1 - Feb. 1, 1976