Talk:Pieter Jelles Troelstra

A Useful Source
A useful source that can be used to improve the article is:

Sapere aude22 (talk) 16:09, 14 January 2012 (UTC)


 * One more useful source
 * Sapere aude22 (talk) 12:29, 1 March 2012 (UTC)
 * Sapere aude22 (talk) 12:29, 1 March 2012 (UTC)