RT @chrislpenner: Anyone want a free digital copy of @opticsbyexample to kickstart their understanding of lenses, traversals and prisms? 1… 0 atbildes
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Ingars Jekabsons (2020-09-08 05:00:01) |
RT @chrislpenner: Anyone want a free digital copy of @opticsbyexample to kickstart their understanding of lenses, traversals and prisms? 1… | |