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Comparison of Dewey and Library of Congress subject classification: Revision history


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17 July 2023

22 January 2023

18 June 2022

2 June 2022

11 April 2022

14 November 2021

28 October 2021

16 October 2020

10 April 2020

26 November 2019

29 September 2019

2 May 2019

16 January 2019

15 January 2019

29 December 2017

20 December 2017

30 November 2017

30 August 2017

20 August 2017

13 January 2017

31 July 2016

1 June 2016

22 August 2014

4 July 2014

28 June 2014

21 August 2013

4 July 2013

7 May 2013

13 March 2013

25 August 2012

27 March 2012

1 March 2012

29 February 2012

28 February 2012

1 December 2010

25 November 2010

22 November 2010

17 April 2010

25 February 2010

17 January 2010

17 August 2009

11 July 2009

26 June 2009

23 April 2009

25 January 2009

18 November 2008

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