Talk:Gravitation/Four potential gravitation
Latest comment: 9 years ago by Hapoth
To user:Fedosin: please note.--Hapoth (discuss • contribs) 18:36, 10 June 2015 (UTC)
To user:Fedosin: please note.--Hapoth (discuss • contribs) 18:36, 10 June 2015 (UTC)Reply