642.9 Sidewalk Ramp and Curb Ramp Design Criteria: Revision history

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4 October 2022

28 April 2021

19 March 2021

20 March 2020

3 April 2019

10 October 2018

9 June 2016

13 May 2016

18 September 2015

24 February 2015

2 April 2014

16 August 2012

5 April 2010

6 January 2010