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- 05:25, 25 January 2013 Liqiang talk contribs moved page Bandgap engineering of multijunction photovoltaic cells literature review to Literature Review (revert)
- 20:00, 21 January 2013 Liqiang talk contribs uploaded a new version of File:User photo.jpg (I took this photo)
- 19:54, 21 January 2013 Liqiang talk contribs uploaded File:User photo.jpg (I took this image) Tag: n
- 19:44, 21 January 2013 Liqiang talk contribs uploaded a new version of File:8.JPG Tag: n
- 19:38, 21 January 2013 Liqiang talk contribs uploaded a new version of File:8.JPG Tag: n
- 18:55, 21 January 2013 User account Liqiang talk contribs was created