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Hace 1 día · 1976 - Douglas L. Dorset and Herbert A. Hauptman used direct methods to solve crystal structures from electron diffraction data. [185] 1976 - Boris Delaunay , building on his work in the 1930s, [186] proved that the regularity of a system of points, an ( r , R ) system or Delone set , can be established by postulating the points' congruence within a sphere of a defined finite radius.
Hace 6 horas · Hello hope you had a great week- I will be available for dates this weekend BNE, SC & GC. Really in the mood to have some good company this weekend.
Hace 1 día · Sydney Canberra Melbourne all in a week, Im feeling quite fortunate thought I would write a rave on it!
