06:1406:14, 1 August 2017diffhist+937
YDG-H
Added new, more up-to-date sources, rewrote the introduction, removed out of date information and content in violation of WP:ORIGINAL and WP:NPOV, scrubbed tidbits without a citationTag: Visual edit
06:1406:14, 1 August 2017diffhist+937
YDG-H
Added new, more up-to-date sources, rewrote the introduction, removed out of date information and content in violation of WP:ORIGINAL and WP:NPOV, scrubbed tidbits without a citationTag: Visual edit