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8 August 2013
24 July 2013
![rocky rocky](/upload/000/u1/9/4/860b32fa.jpg)
rocky added article Undersaturated diamond: preconditions and developm...
10 年 前
![rocky rocky](/upload/000/u1/9/4/860b32fa.jpg)
rocky added article Elliptical perigee in the XXI century
10 年 前